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Results for "

covalent labeling

" in MedChemExpress (MCE) Product Catalog:

By Targets:	ADC Linker (3) Aldehyde Dehydrogenase (ALDH) (1) Amine N-methyltransferase (1) Amyloid-β (1) Antibiotic (4) Apoptosis (1) Aurora Kinase (1) Autophagy (2) Bacterial (6) Beta-lactamase (2) Biochemical Assay Reagents (20) Btk (1) CDK (1) Cholinesterase (ChE) (2) COX (1) Cytochrome P450 (2) DNA Alkylator/Crosslinker (1) DNA Methyltransferase (2) DNA/RNA Synthesis (1) Drug Derivative (1) EGFR (2) Endogenous Metabolite (2) FAP (1) Fluorescent Dye (36) Glycosidase (1) GSK-3 (1) HIV (1) Influenza Virus (1) Insecticide (1) Isotope-Labeled Compounds (21) Kallikrein (1) Liposome (1) Lipoxygenase (1) MOFs (1) NF-κB (2) Nucleoside Antimetabolite/Analog (2) Organoid (1) Parasite (2) PGE synthase (1) PPAR (1) Proteasome (1) PSMA (1) Radionuclide-Drug Conjugates (RDCs) (1) Ras (3) SARS-CoV (1) VISTA (1)
By Research Areas:	Cancer (28) Cardiovascular Disease (2) Infection (9) Inflammation/Immunology (6) Metabolic Disease (1) Neurological Disease (4)
Click Chemistry:	Labeling and Fluorescence Imaging (2) DBCO (2) Azide (2) Tetrazine (3) Alkynes (5)
Oligonucleotides:	Fluorescent Lipids (1) Pegylated Lipids (1)

Inhibitors & Agonists

Screening Libraries

Fluorescent Dyes

Biochemical Assay Reagents

Peptides

MCE Kits

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Products

Isotope-Labeled Compounds

Click Chemistry

Oligonucleotides

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-Y0623

N-Hydroxysuccinimide 5+ Cited Publications HOSu; 1-Hydroxy-2,5-pyrrolidinedione	Biochemical Assay Reagents	Others
N-Hydroxysuccinimide (HOSu; 1-Hydroxy-2,5-pyrrolidinedione) is a covalent crosslinker commonly used in bioconjugation technology with a primary amine group. N-Hydroxysuccinimide reacts with amino groups (-NH2) to form a stable amide bond, which can modify amino-containing biomolecules. N-Hydroxysuccinimide can be used, for example, for protein labeling with fluorescent dyes and enzymes, surface activation of chromatography supports, microbeads, nanoparticles and microarray slides, and chemical synthesis of peptides. N-Hydroxysuccinimide has a wide range of applications in biomaterial synthesis (such as collagen, chitosan crosslinking), drug delivery systems (such as hydrogel preparation) and tissue engineering .

HY-112697

Rhodamine B isothiocyanate 1 Publications Verification	Biochemical Assay Reagents	Others
Rhodamine B isothiocyanate (RBITC) is a fluorescent dye commonly used in biological imaging and labeling applications. It has an isothiocyanate functional group that can be covalently attached to amino groups on proteins and other biomolecules, making it useful for fluorescent labeling of cells and tissues. RBITC fluoresces bright orange-red under green light excitation, which makes it easy to detect and track labeled molecules in complex samples. Due to its stability and sensitivity, RBITC has been widely used in various research fields, including cell biology, immunology, and neurobiology.

HY-122609

XO44 PF-6808472	CDK	Cancer
XO44 (PF-6808472) is a broad-spectrum covalent kinase probe. XO44 can bind in CDK2 and CDK1. XO44 also labels CDK4 proteins in cells .

HY-79647

Fmoc-OSu N-(Fmoc-oxy)succinimide	Biochemical Assay Reagents	Others
Fmoc-OSu (N-(Fmoc-oxy)succinimide) is an acylating agent that targets amino groups (-NH2). It can selectively protect the amino groups of amino acids by covalently binding with primary or secondary amines through nucleophilic substitution reactions. Fmoc-OSu forms a stable amide bond with the amino group to avoid side reactions of the amino group in peptide synthesis. It can also be used as a fluorescent labeling reagent to react with glycosylamines for efficient labeling of N-sugar chains. Fmoc-OSu can be used as an Fmoc protection strategy in peptide synthesis, and as a fluorescent labeling and analysis method for N-sugar chains .

HY-110213

BODIPY 630/650X	Fluorescent Dye	Others
BODIPY 630/650X is a red fluorescent dye that targets amine groups. BODIPY 630/650X displays excitation/emission maxima of 630/650 nm, respectively. BODIPY 630/650X can be used to covalently label proteins, antibodies, or other amine-containing biomolecules for detection and imaging .

HY-112624I

Dextran T3 (MW 3,000) Dextran 3; Dextran D3; Dextran T3(MW 2400-3600)	Bacterial	Others
Dextran T3 (Dextran 3; Dextran T3(MW 2400-3600)) is a neural tracer and intestinal permeability probe that can move anterogradely and retrogradely in neuronal axons by passive diffusion. Dextran T3 (MW 3,000) is able to permeate across the intestinal epithelial cell membrane in the presence of cholera toxin-induced cytoskeletal disturbance. Dextran T3 (MW 3,000) is used as a fluorescent marker to rapidly label developing neurons (such as Xenopus retinal ganglion cells) and to assess intestinal barrier function. It can be used to study axonal transport in neuroanatomy and permeability changes in intestinal pathophysiology. The Dextran series of compounds are also natural polysaccharide drug carriers that can be connected to drugs through covalent bonding methods such as ester bonds, amide bonds or click chemistry, or self-assembled to form carriers such as nanoparticles and hydrogels. Dextran is biodegradable and biocompatible, and can achieve targeted delivery and controlled release of drugs. Dextran derivatives can prolong the half-life of drugs, increase local concentrations, and reduce the activity of immune clearance .

HY-123749

Tetramethylrhodamine-5-iodoacetamide 5-TMRIA	Fluorescent Dye	Others
Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) is a thiol-selective reactive dye that is used to non-specifically label proteins via the cysteine residues. Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) can be used to covalently label DNA fragments .

HY-D0056

5-Carboxyfluorescein diacetate N-succinimidyl ester Maximum Cited Publications 10 Publications Verification	Fluorescent Dye	Others
5-Carboxyfluorescein diacetate N-succinimidyl ester is a cell permeable dye (Ex=492 nm, Em=517 nm). 5-Carboxyfluorescein diacetate N-succinimidyl ester can label cells by covalently binding to intracellular molecules. 5-Carboxyfluorescein diacetate N-succinimidyl ester is used to track lymphocyte migration and proliferation .

HY-D2171A

AF488 DBCO ditriethylamine 1 Publications Verification	Fluorescent Dye	Others
AF488 DBCO ditriethylamineis a fluorescent dye and also a click chemistry reagent that can label azide-containing biomolecules. AF488 DBCO ditriethylaminemediates the coupling reaction with azide-modified 2'-OMe RNA oligonucleotides. DBCO is a bioorthogonal partner of azides and enables covalent coupling without copper (Ex/Em = 470/520 nm) .

HY-15772S1

Osimertinib-13C,d3 AZD-9291-¹³C,d₃; Mereletinib-¹³C,d₃	EGFR	Cancer
Osimertinib- ¹³C,d₃ is the deuterium and ¹³C labeled Osimertinib. Osimertinib (AZD9291) is a covalent, orally active, irreversible, and mutant-selective EGFR inhibitor with an apparent IC50 of 12 nM against L858R and 1 nM against L858R/T790M, respectively.

HY-W053709A

Tetrazine-Amine monohydrochloride (4-(1,2,4,5-Tetrazin-3-yl)phenyl)methanamine (monohydrochloride); Tetrazine-NH2 monohydrochloride	Biochemical Assay Reagents	Cancer
Tetrazine-Amine monohydrochloride is the monohydrochloride form of Tetrazine-Amine (HY-W053709). Tetrazine-amine is a Tetrazine linker that can be used to covalently label living cells by cycloaddition . Tetrazine-Amine (monohydrochloride) is a click chemistry reagent, it contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.

HY-126192

Pittsburgh Compound B PiB; 6-OH-BTA-1	Amyloid-β	Neurological Disease
Pittsburgh Compound B (PiB) is a blood-brain barrier-permeable, specific Aβ deposition PET tracer that binds to Aβ(1-40) fibrils with a K_i value of 678.4 nM. Through click chemical modification (a clickable Pittsburgh Compound B derivative is prepared by introducing a PEG3 linker and an alkynyl group at the 6-hydroxy site of Pittsburgh Compound B, followed by covalent conjugation with azide-labeled fluorescent dyes or affinity tags via copper-catalyzed azide-alkyne cycloaddition (CuAAC)), Pittsburgh Compound B and its conjugates can be used for fluorescence imaging, ultrastructural studies, and enrichment and characterization of Aβ complexes. Pittsburgh Compound B is applicable to Alzheimer's disease research .

HY-W998680

Fluorescein-maleimide 5-FITC-Maleimide	Fluorescent Dye	Others
Fluorescein-maleimide (5-FITC-Maleimide) is a thiol-reactive fluorescent derivatization reagent and non-specific protein labeling reagent. Fluorescein-maleimide covalently binds to protein thiol groups for protein labeling. Fluorescein-maleimide covalently binds to protein amino and imidazole groups under neutral pH conditions. Fluorescein-maleimide is used for fluorescent labeling of proteins, nucleic acids or other molecules containing one or more thiol groups (Ex/Em = 494/519 nm) .

HY-177554

KB05yne	Biochemical Assay Reagents	Cancer
KB05yne is a site-selective, alkyne-functionalized electrophilic "probe" fragment probe designed for covalent ligand discovery, with preferential reactivity toward specific cysteine residues in proteins. KB05yne strongly labels wild-type target proteins (e.g., CDKN2AIP, HPCAL1) but does not label their cysteine-to-alanine mutants, confirming site-specific cysteine reactivity. KB05yne can be used for the discovery and optimization of site-specific covalent ligands, and is applicable to proteins with diverse structures and functions, especially in studies targeting cysteine residues in cancer-related or difficult-to-purify proteins .

HY-D1390A

Sulfo-Cy5-Mal	Fluorescent Dye	Others
Sulfo-Cy5-Mal is a fluorescent dye derivative composed of a CY5 dye and a maleimide functional group. Sulfo-Cy5-Mal specifically covalently binds to thiol-containing (-SH) biomolecules. Sulfo-Cy5-Mal can be used for protein labeling, antibody conjugation, molecular imaging, and drug delivery studies (Ex/Em = 633 nm/670 nm) .

HY-D1808

Vari Fluor 488-Streptavidin 1 Publications Verification	Fluorescent Dye	Others
Vari Fluor 488-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=490 nm/515 nm. Product Concentration: 0.8 mg/mL

HY-D1805

Vari Fluor 647-Streptavidin	Fluorescent Dye	Others
Vari Fluor 647-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=650 nm/665 nm. Product Concentration: 0.8 mg/mL

HY-P11306

Biotin-(Oaa)3-epoxomicin	Proteasome NF-κB	Inflammation/Immunology
Biotin-(Oaa)₃-epoxomicin is a biotin-labeled form of Epoxomicin (HY-13821), prepared by conjugating Epoxomicin with biotin via three hydrophilic oxaacetyl amino acid (Oaa) linkers. Biotin-(Oaa)₃-epoxomicin is primarily used in proteomic studies for the capture, identification and target validation of proteasome complexes, to determine the intracellular targets of epoxomicin. Epoxomicin acts as a proteasome inhibitor and NF-κB inhibitor, which effectively blocks inflammatory responses in mouse ear edema assays. It inhibits proteasome activity via covalent binding to catalytic subunits including LMP7, X, MECL1 and Z, with the strongest inhibitory effect on chymotrypsin-like activity, and does not interfere with non-proteasomal proteases such as trypsin and papain .

HY-151645

Alkyne-SNAP	ADC Linker	Others
Alkyne-SNAP (compound 3) is an Alkyne-conjugated benzylguanine. The benzylguanine moiety reacts with the SNAP-tag, allowing irreversible and covalent labeling of SNAP fusion proteins with an additional alkyne functionality for further click chemistry conjugation .

HY-D0967

Cy5-bifunctional dye	Fluorescent Dye	Others
Cy5-bifunctional dye is a bifunctional dye used for covalent labeling of primary amines on proteins or oligonucleotides (Ex/Em = 649 nm/670 nm). Cy5-bifunctional dye can label recombinant annexin-V to assess phosphatidylserine exposure on the cell surface via flow cytometry. Cy5-bifunctional dye can label anti-human IgG (H + L) secondary antibodies. Cy5-bifunctional dye is applicable to studies of glanders and melioidosis .

HY-15772S

Osimertinib-d6 AZD-9291-d₆; Mereletinib-d₆	EGFR	Cancer
Osimertinib-d₆ is a deuterium labeled osimertinib. Osimertinib is a covalent, orally active, irreversible, and mutant-selective EGFR inhibitor with an apparent IC₅₀ of 12 nM against L858R and 1 nM against L858R/T790M. Osimertinib overcomes T790M-mediated resistance to EGFR inhibitors in lung cancer .

HY-W093017

4-Chloropyridine	Amine N-methyltransferase	Others
4-Chloropyridine is a NNMT (Nicotinamide N-methyltransferase) substrate and suicide inhibition-based protein labeling scaffold precursor.4-Chloropyridine undergoes NNMT-catalyzed pyridine nitrogen methylation to increase C4 electrophilicity, enabling aromatic nucleophilic substitution by NNMT cysteine C159 for covalent NNMT modification and inactivation.4-Chloropyridine can be used for the research of various cancers .

HY-D2171

AF488 DBCO	Fluorescent Dye	Others
AF488 DBCO is a fluorescent dye and also a click chemistry reagent that can label azide-containing biomolecules. AF488 DBCO mediates the coupling reaction with azide-modified 2'-OMe RNA oligonucleotides. DBCO is a bioorthogonal partner of azides and enables covalent coupling without copper (Ex/Em = 470/520 nm) .

HY-114299S

Salcaprozate-d4 sodium SNAC-d4 sodium	Isotope-Labeled Compounds	Others
Salcaprozate-d4 (sodium) is a deuterated labeled Salcaprozate (sodium) . Salcaprozate sodium (SNAC), an oral absorption promoter, and has the potential as a delivery agent for oral forms of heparin and insulin. Salcaprozate sodium could increase passive transcellular permeation across small intestinal epithelia based on increased lipophilicity arising from non-covalent macromolecule complexation .

HY-14879S2

Avibactam sodium salt-13C5 NXL-104-¹³C₅	Isotope-Labeled Compounds Antibiotic Beta-lactamase Bacterial	Infection
Avibactam sodium salt- ¹³C₅ (NXL-104- ¹³C₅) is ¹³C labeled Avibactam (sodium). Avibactam sodium (NXL-104) is a covalent and reversible non-β-lactam β-lactamase inhibitor which inhibits β-lactamase TEM-1 and CTX-M-15 with IC₅₀s of 8 nM and 5 nM, respectively .

HY-158008

(R)-G12Di-7	Ras	Cancer
(R)-G12Di-7 is a covalent ligand for KRAS-G12D, which selectively labels K-Ras-G12D·GDP and K-Ras-G12D·GppNHp. (R)-G12Di-7 exhibits inhibitory activity against G12D mutated cancer cells .

HY-114277S

Sotorasib-d7 AMG-510-d₇	Isotope-Labeled Compounds Ras	Cancer
Sotorasib-d₇ (AMG-510-d₇) is a deuterium-labeled Sotorasib (HY-114277). Sotorasib (AMG-510) is a first-in-class, orally bioavailable, and selective KRAS G12C covalent inhibitor. Sotorasib irreversibly inhibits KRAS G12C by locking it in an inactive GDP-bound state. Sotorasib leads to the regression of KRAS G12C‑mutated locally advanced or metastatic non‑small cell lung cancer (NSCLC) .

HY-113466S

4-Hydroxynonenal-d3 4-HNE-d₃	Isotope-Labeled Compounds Aldehyde Dehydrogenase (ALDH) Endogenous Metabolite	Cardiovascular Disease Neurological Disease Cancer
4-Hydroxynonenal-d₃ is the deuterium labeled 4-Hydroxynonenal. 4-Hydroxynonenal (4-HNE) is an α,β unsaturated hydroxyalkenal and an oxidative/nitrosative stress biomarker. 4-Hydroxynonenal is a substrate and an inhibitor of acetaldehyde dehydrogenase 2 (ALDH2). 4-Hydroxynonenal can modulate a number of signaling processes mainly through forming covalent adducts with nucleophilic functional groups in proteins, nucleic acids, and membrane lipids. 4-Hydroxynonenal plays an important role in cancer through mitochondria .

HY-151646

Alkyne-PEG5-SNAP Alkyne-PEG5-BG	ADC Linker	Others
Alkyne-PEG5-SNAP is a click chemistry reagent containing an alkyne group. Alkyne-PEG5-SNAP can alkyne conjugated benzylguanine (BG), the BG moiety reacts specifically and rapidly with SNAP-tag, a polypeptide protein tag, allowing irreversible and covalent labeling of SNAP fusion proteins with an additional alkyne functionality suitable for further conjugation . Alkyne-PEG5-SNAP is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-D1807

Vari Fluor 555-Streptavidin	Fluorescent Dye	Others
Vari Fluor 555-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=555 nm/565 nm. Product Concentration: 0.8 mg/mL

HY-W355129S

MeIQx-d3	Isotope-Labeled Compounds	Cancer
MeIQx-d3 is the deuterium labeled MeIQx (HY-W355129) . MeIQx is a heterocyclic amine (HAs) compound and a dietary aromatic amine, which can bind covalently to hemoglobin. MeIQx is a mutagenic compound that induces liver tumors .

HY-W053709

Tetrazine-Amine (4-(1,2,4,5-Tetrazin-3-yl)phenyl)methanamine; Tetrazine-NH2	MOFs	Cancer
Tetrazine-Amine ((4-(1,2,4,5-Tetrazin-3-yl)phenyl)methanamine) is a tetrazine linker that can be used to covalently label live cells through a cycloaddition . Tetrazine-Amine is a click chemistry reagent, it contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.

HY-W020784

3-(N-Maleimidopropionyl)biocytin	Biochemical Assay Reagents	Others
3-(N-Maleimidopropionyl)biocytin is a cysteine-specific labeling reagent and non-membrane-permeable probe. 3-(N-Maleimidopropionyl)biocytin covalently modifies the exposed cysteine residues of yeast Tim44, conjugating the biotin moiety to the polypeptide chain. 3-(N-Maleimidopropionyl)biocytin determines the topology of membrane proteins by modifying the exposed cysteine residues on the outer side of the inner mitochondrial membrane .

HY-159194

DSPE-PEG2000-Cy5.5	Liposome	Cancer
DSPE-PEG2000-Cy5.5 is a phospholipid-fluorophore conjugate consisting of Cy5.5 covalently linked to 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE), serving as a surface label for liposomes in multimodal CT/optical imaging.DSPE-PEG2000-Cy5.5 can be used for the research of non-small cell lung cancer .

HY-D1806

Vari Fluor 594-Streptavidin 1 Publications Verification	Fluorescent Dye	Others
Vari Fluor 594-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=590 nm/617 nm. Product Concentration: 0.8 mg/mL

HY-W012166

N-Succinimidyl bromoacetate NHS-Bromoacetate	Biochemical Assay Reagents	Infection
N-Succinimidyl bromoacetate (NHS-Bromoacetate) is a heterobifunctional crosslinking reagent, mainly used to modify the ɛ-amino group of lysine side chains. By covalently linking its bromoacetyl moiety to the ɛ-amino group of lysine in peptidomimetics, N-Succinimidyl bromoacetate enables their conjugation with thiol-modified nanoparticles via thioether bonds. N-Succinimidyl bromoacetate also performs bromoacetylation modification on carrier proteins, which then forms stable thioether bonds with the thiol groups of cysteine in peptides, thus efficiently preparing soluble peptide-protein conjugates with high substitution ratios. N-Succinimidyl bromoacetate can be used to prepare activated Sepharose derivatives for affinity chromatography, protein affinity labeling reagents, and peptide-protein immunogen conjugates with non-immunogenic linkages. N-Succinimidyl bromoacetate is applicable to studies related to HIV-1 infection and glioblastoma multiforme .

HY-16293S

Lurbinectedin-d3 PM01183-d₃; LY-01017-d₃	DNA Alkylator/Crosslinker DNA/RNA Synthesis	Cancer
Lurbinectedin-d₃ is deuterium labeled Lurbinectedin. Lurbinectedin (PM01183) is a DNA minor groove covalent binder with potent anti-tumour activity; inhibits RMG1 and RMG2 cell growth with IC₅₀ values of 1.25 and 1.16 nM, respectively .

HY-164725

FAPI-mFS	Radionuclide-Drug Conjugates (RDCs) FAP	Cancer
FAPI-mFS is an irreversible fibroblast activation protein (FAP) inhibitor, that enhances the uptake and retention time in cancer cells through its covalent binding property for FAP. FAPI-mFS can be used for cancer imaging the therapy, when labeled with radioactive 68Ga or 177Lu . FAPI-mFS can be used for the synthesis/research of Radionuclide-Drug Conjugates (RDCs).

HY-175744

PSMA-MAL-5	PSMA	Cancer
PSMA-MAL-5 is a PSMA ligand. PSMA-MAL-5 covalently binds to Cys466 of PSMA. PSMA-MAL-5 labeled with ¹⁷⁷Lu and ²²⁵Ac has high radiostability and tumor uptake. PSMA-MAL-5 also effectively inhibits tumor growth. PSMA-MAL-5 can be used for SPECT/CT imaging and radionuclide therapy of prostate cancer .

HY-W800839

TCO-PEG4-TFP ester	Biochemical Assay Reagents	Others
TCO-PEG4-TFP Ester is an amine-reactive labeling reagent used to modify proteins, antibodies, and other amine-containing biopolymers. A 2,3,5,6-tetrafluorophenol (TFP) is a reactive ester that displays much better stability toward hydrolysis in aqueous media resulting in more efficiency and better reproducible labeling of biopolymers. TFP ester of carboxylic acids react with primary amines at the same rate as NHS ester forming covalent amide bond that is identical to one formed by the reaction between primary amines and NHS esters or sulfo-NHS esters.

HY-D1809

Vari Fluor 405-Streptavidin	Fluorescent Dye	Others
Vari Fluor 405-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=405 nm/431 nm. Product Concentration: 0.8 mg/mL

HY-D1804

Vari Fluor 680-Streptavidin	Fluorescent Dye	Others
Vari Fluor 680-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=680 nm/701 nm. Product Concentration: 0.8 mg/mL

HY-D2956

BC-GLA-NHS CLIP-GLA-NHS	Biochemical Assay Reagents	Others
BC-GLA-NHS (CLIP-GLA-NHS) is a NHS-labeled CLIP tag, which is an amine-reactive crosslinker and can achieve site-specific protein labeling. The NHS ester of BC-GLA-NHS reacts with the primary amine of the target molecule (such as antibodies, quantum dots) in a pH 7.5-8.5 buffer solution to form a stable amide bond. After coupling, the BC molecule undergoes a nucleophilic substitution reaction with the active site (Cys) of the CLIP-tagged fusion protein, releasing benzylcytosine and forming an irreversible thioether bond, achieving covalent labeling. BC-GLA-NHS can be used for click chemistry labeling .

HY-148958

SNAP-Biotin	Biochemical Assay Reagents	Others
SNAP-Biotin is a biotin-labeled SNAP tag probe. SNAP-Biotin can be used for protein biotinylation .

HY-126943

SAHA-BPyne	Fluorescent Dye	Others
SAHA-BPyne is an activity-based protein profiling (ABPP) probe for detecting HDAC activity, which covalently labels the proximal proteins through a photoactivation. SAHA-BPyne inhibits HDAC activity in HeLa nuclear lysate with an IC₅₀ of less than 5 μM .

HY-W010482S

3-Ethylaniline-d5	Isotope-Labeled Compounds	Cancer
3-Ethylaniline-d₅ is the deuterium labeled 3-Ethylaniline (HY-W010482). 3-Ethylaniline is metabolized in vivo to electrophilic intermediates that covalently bind to DNA and that adducts are formed in the DNA of bladder. 3-Ethylaniline can be used for the research of bladder cancer .

HY-114436S

MRTX-1257-d6	Isotope-Labeled Compounds	Cancer
MRTX-1257-d₆ is the deuterium labeled MRTX-1257 (HY-114436). MRTX-1257 is a selective, irreversible, covalent and orally active KRAS G12C inhibitor, with an IC₅₀ of 900 pM for KRAS dependent ERK phosphorylation in H358 cells .

HY-W615327

Bis-sulfone NHS ester	Biochemical Assay Reagents	Others
Bis-sulfone NHS Ester is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a reduced native disulfide bond such as the interchain disulfide bonds of an antibody. The reaction results in covalent rebridging of the disulfide bond via a three carbon bridge leaving the protein structurally intact.

HY-D1886

Vari Fluor 647 SE	Fluorescent Dye	Others
Vari Fluor 647 SE is a fluorescent dye, SE stands for "succinimidyl ester". Vari Fluor 647 SE belongs to the Vari Fluor family of labeling reagents used in cell and molecular biology research. Vari Fluor 647 SE can react with an amino group to form a covalent bond, thereby introducing Vari Fluor 647 dye into the target molecule or cell. Vari Fluor 647 SE is a reactive dye that produces a fluorescent signal after binding to a target molecule or cell.

HY-D1993

ATTO 647 NHS ester	Fluorescent Dye HIV	Infection
ATTO 647 NHS ester is a fluorescent label targeting free amino groups. ATTO 647 NHS ester can undergo a nucleophilic reaction with the free amino groups of EF-C peptide via its activated carboxylic acid group to form a stable covalent conjugate. ATTO 647 NHS ester-labeled nanofibers not only retain retroviral transduction-enhancing activity but also maintain stable fluorescent signals in both buffer and cell culture systems. ATTO 647 NHS ester is suitable for detection applications including fluorescence spectroscopy, microscopy and flow cytometry. ATTO 647 NHS ester has been used in studies related to HIV-1 infection .

Cat. No.	Product Name

HY-LD004

DEL Covalent Library

14 million compounds

DEL technology enables the simultaneous screening of millions or billions of compounds in a single tube by covalently linking each small molecule with a unique DNA sequence. Traditional DEL screening primarily focuses on identifying non-covalent binding molecules, where interactions with the target are reversible. In contrast, DNA‑encoded covalent library is an ultra‑high‑throughput screening library developed on the basis of conventional DNA‑encoded library technology. It incorporates controllable electrophilic covalent warheads capable of forming irreversible covalent bonds with amino acid residues at the active sites of target proteins, including Cys, Lys, Ser, Tyr, and others. This covalent binding enhances binding affinity, prolongs residence time at the target site, and has the potential to overcome challenges associated with traditional non-covalent inhibitors, such as drug resistance or off-target effects.

Each compound in the library contains both a binding domain and an electrophilic warhead. It first recognizes and binds to the target through non covalent interactions, and then forms a stable covalent bond with key amino acid residues to achieve irreversible inhibition. This library is specifically designed for the discovery of potent, long lasting, and highly selective covalent inhibitors, particularly for undruggable targets such as kinases, GPCRs, proteases, and mutant oncoproteins. Each molecule is uniquely labeled with a DNA barcode for molecular identification and sequencing decoding.

This library is an advanced and highly diverse collection, consists of 35 independent sub-libraries with a total scaleof 14 million compounds, It incorporates over 14 experimentally validated covalent warheads capable of targeting cysteine, lysine, arginine, aspartic acid and glutamic acid. This library is constructed with diverse drug like core scaffolds and integrated controllable covalent warheads, it features structural diversity, reaction spec

Cat. No.	Product Name	Type

HY-112697

Rhodamine B isothiocyanate

1 Publications Verification

Fluorescent Dyes

Rhodamine B isothiocyanate (RBITC) is a fluorescent dye commonly used in biological imaging and labeling applications. It has an isothiocyanate functional group that can be covalently attached to amino groups on proteins and other biomolecules, making it useful for fluorescent labeling of cells and tissues. RBITC fluoresces bright orange-red under green light excitation, which makes it easy to detect and track labeled molecules in complex samples. Due to its stability and sensitivity, RBITC has been widely used in various research fields, including cell biology, immunology, and neurobiology.

HY-110213

BODIPY 630/650X	Fluorescent Dyes
BODIPY 630/650X is a red fluorescent dye that targets amine groups. BODIPY 630/650X displays excitation/emission maxima of 630/650 nm, respectively. BODIPY 630/650X can be used to covalently label proteins, antibodies, or other amine-containing biomolecules for detection and imaging .

HY-123749

Tetramethylrhodamine-5-iodoacetamide 5-TMRIA	Fluorescent Dyes
Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) is a thiol-selective reactive dye that is used to non-specifically label proteins via the cysteine residues. Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) can be used to covalently label DNA fragments .

HY-D0056

5-Carboxyfluorescein diacetate N-succinimidyl ester Maximum Cited Publications 10 Publications Verification	Fluorescent Dyes
5-Carboxyfluorescein diacetate N-succinimidyl ester is a cell permeable dye (Ex=492 nm, Em=517 nm). 5-Carboxyfluorescein diacetate N-succinimidyl ester can label cells by covalently binding to intracellular molecules. 5-Carboxyfluorescein diacetate N-succinimidyl ester is used to track lymphocyte migration and proliferation .

HY-D2171A

AF488 DBCO ditriethylamine 1 Publications Verification	Fluorescent Dyes
AF488 DBCO ditriethylamineis a fluorescent dye and also a click chemistry reagent that can label azide-containing biomolecules. AF488 DBCO ditriethylaminemediates the coupling reaction with azide-modified 2'-OMe RNA oligonucleotides. DBCO is a bioorthogonal partner of azides and enables covalent coupling without copper (Ex/Em = 470/520 nm) .

HY-W998680

Fluorescein-maleimide

5-FITC-Maleimide

Fluorescent Dyes

Fluorescein-maleimide (5-FITC-Maleimide) is a thiol-reactive fluorescent derivatization reagent and non-specific protein labeling reagent. Fluorescein-maleimide covalently binds to protein thiol groups for protein labeling. Fluorescein-maleimide covalently binds to protein amino and imidazole groups under neutral pH conditions. Fluorescein-maleimide is used for fluorescent labeling of proteins, nucleic acids or other molecules containing one or more thiol groups (Ex/Em = 494/519 nm) .

HY-D1390A

Sulfo-Cy5-Mal	Fluorescent Dyes
Sulfo-Cy5-Mal is a fluorescent dye derivative composed of a CY5 dye and a maleimide functional group. Sulfo-Cy5-Mal specifically covalently binds to thiol-containing (-SH) biomolecules. Sulfo-Cy5-Mal can be used for protein labeling, antibody conjugation, molecular imaging, and drug delivery studies (Ex/Em = 633 nm/670 nm) .

HY-D1808

Vari Fluor 488-Streptavidin

1 Publications Verification

Fluorescent Dyes

Vari Fluor 488-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=490 nm/515 nm.
Product Concentration: 0.8 mg/mL

HY-D1805

Vari Fluor 647-Streptavidin

Fluorescent Dyes

Vari Fluor 647-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=650 nm/665 nm.
Product Concentration: 0.8 mg/mL

HY-D0967

Cy5-bifunctional dye

Fluorescent Dyes

Cy5-bifunctional dye is a bifunctional dye used for covalent labeling of primary amines on proteins or oligonucleotides (Ex/Em = 649 nm/670 nm). Cy5-bifunctional dye can label recombinant annexin-V to assess phosphatidylserine exposure on the cell surface via flow cytometry. Cy5-bifunctional dye can label anti-human IgG (H + L) secondary antibodies. Cy5-bifunctional dye is applicable to studies of glanders and melioidosis .

HY-D2171

AF488 DBCO	Fluorescent Dyes
AF488 DBCO is a fluorescent dye and also a click chemistry reagent that can label azide-containing biomolecules. AF488 DBCO mediates the coupling reaction with azide-modified 2'-OMe RNA oligonucleotides. DBCO is a bioorthogonal partner of azides and enables covalent coupling without copper (Ex/Em = 470/520 nm) .

HY-D1807

Vari Fluor 555-Streptavidin

Fluorescent Dyes

Vari Fluor 555-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=555 nm/565 nm.
Product Concentration: 0.8 mg/mL

HY-159194

DSPE-PEG2000-Cy5.5	Fluorescent Dyes
DSPE-PEG2000-Cy5.5 is a phospholipid-fluorophore conjugate consisting of Cy5.5 covalently linked to 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE), serving as a surface label for liposomes in multimodal CT/optical imaging.DSPE-PEG2000-Cy5.5 can be used for the research of non-small cell lung cancer .

HY-D1806

Vari Fluor 594-Streptavidin

1 Publications Verification

Fluorescent Dyes

Vari Fluor 594-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=590 nm/617 nm.
Product Concentration: 0.8 mg/mL

HY-D1809

Vari Fluor 405-Streptavidin

Fluorescent Dyes

Vari Fluor 405-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=405 nm/431 nm.
Product Concentration: 0.8 mg/mL

HY-D1804

Vari Fluor 680-Streptavidin

Fluorescent Dyes

Vari Fluor 680-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=680 nm/701 nm.
Product Concentration: 0.8 mg/mL

HY-D2956

BC-GLA-NHS

CLIP-GLA-NHS

Fluorescent Dyes

BC-GLA-NHS (CLIP-GLA-NHS) is a NHS-labeled CLIP tag, which is an amine-reactive crosslinker and can achieve site-specific protein labeling. The NHS ester of BC-GLA-NHS reacts with the primary amine of the target molecule (such as antibodies, quantum dots) in a pH 7.5-8.5 buffer solution to form a stable amide bond. After coupling, the BC molecule undergoes a nucleophilic substitution reaction with the active site (Cys) of the CLIP-tagged fusion protein, releasing benzylcytosine and forming an irreversible thioether bond, achieving covalent labeling. BC-GLA-NHS can be used for click chemistry labeling .

HY-148958

SNAP-Biotin	Fluorescent Dyes
SNAP-Biotin is a biotin-labeled SNAP tag probe. SNAP-Biotin can be used for protein biotinylation .

HY-D1886

Vari Fluor 647 SE

Fluorescent Dyes

Vari Fluor 647 SE is a fluorescent dye, SE stands for "succinimidyl ester". Vari Fluor 647 SE belongs to the Vari Fluor family of labeling reagents used in cell and molecular biology research. Vari Fluor 647 SE can react with an amino group to form a covalent bond, thereby introducing Vari Fluor 647 dye into the target molecule or cell. Vari Fluor 647 SE is a reactive dye that produces a fluorescent signal after binding to a target molecule or cell.

HY-D1993

ATTO 647 NHS ester

Fluorescent Dyes

ATTO 647 NHS ester is a fluorescent label targeting free amino groups. ATTO 647 NHS ester can undergo a nucleophilic reaction with the free amino groups of EF-C peptide via its activated carboxylic acid group to form a stable covalent conjugate. ATTO 647 NHS ester-labeled nanofibers not only retain retroviral transduction-enhancing activity but also maintain stable fluorescent signals in both buffer and cell culture systems. ATTO 647 NHS ester is suitable for detection applications including fluorescence spectroscopy, microscopy and flow cytometry. ATTO 647 NHS ester has been used in studies related to HIV-1 infection .

HY-D2923

PA-JF549-Halo ligand

Fluorescent Dyes

PA-JF549-Halo ligand is a covalently linked conjugate comprising the photoactivatable fluorescent dye PA-JF549 and a ligand for the HaloTag protein. PA-JF549-Halo ligand exhibts inherent structural properties and predispose it to localize within mitochondria. PA-JF549-Halo ligand combines the exceptional brightness, photostability, and cell permeability of the JF549 dye with photoactivation capabilities and the high specificity characteristic of HaloTag protein labeling technology. PA-JF549-Halo ligand enables high-quality single-molecule imaging and super-resolution imaging of specific proteins within live cells .

HY-D2933

SNAP-505	Fluorescent Dyes
SNAP-505 is a green fluorescent O6 benzylguanine derivative. SNAP-505 labels SNAP-tagged proteins covalently. SNAP-505 can be used to label cells (green) .

HY-D0152

Tetramethylrhodamine-6-maleimide	Fluorescent Dyes
Tetramethylrhodamine-6-maleimide is a fluorescent dye with a reactive sulfhydryl-specific moiety is covalently coupled to this cysteine. Tetramethylrhodamine-6-maleimide can be used as labels to detect local protein motions of the fully active Na+/K+-ATPase in real time .

HY-D2154

AF 430 carboxylic acid dipotassium	Fluorescent Dyes
AF 430 carboxylic acid is a derivative of the yellow fluorescent dye AF 430. AF430 has an excitation wavelength of 425 nm and an emission wavelength of 542 nm. AF 430 carboxylic acid can form covalent bonds through a condensation reaction between carboxylic acid groups and molecules containing amino groups. To achieve specific coupling of dye labels and biomolecules .

HY-D2926

BG-Tetrazine

BG-Tz; SNAP-Tetrazine

Fluorescent Dyes

BG-Tetrazine (BG-Tz; SNAP-Tetrazine) is a SNAP tag substrate that contains a methyl tetrazine group. BG-Tetrazine can specifically covalently label the target protein of the intracellular SNAP-tag fusion. The tetrazine group it carries can rapidly and efficiently undergo a bioorthogonal reaction with functional groups such as trans cyclooctene (TCO), thereby enabling multiple labeling, functionalization or enrichment of proteins. BG-Tetrazine can be applied in click chemistry .

HY-D1390

Sulfo-Cy5-Mal potassium	Fluorescent Dyes
Sulfo-Cy5-Mal potassium is a fluorescent dye derivative composed of a CY5 dye and a maleimide functional group. Sulfo-Cy5-Mal potassium specifically covalently binds to thiol-containing (-SH) biomolecules. Sulfo-Cy5-Mal potassium can be used for protein labeling, antibody conjugation, molecular imaging, and drug delivery studies (Ex/Em = 633 nm/670 nm) .

HY-D2745

BP Fluor 594 NHS ester

Fluorescent Dyes

BP Fluor 594 NHS ester is the most popular tool for modifying proteins or antibodies through the primary amines (Lys), amine-modified oligonucleotides, and other amine-containing biomolecules with BP Fluor 594 label. The labeling occurs most efficiently at pH 7-9 and forms a stable, covalent amide bond. BP Fluor 594 dye can be used for proteins labeling at high molar ratios without significant self-quenching, enabling brighter conjugates and more sensitive detection. BP Fluor 594 is bright, water-soluble, and pH-insensitive from pH 4 to pH 10 red-fluorescent dye with absorption and emission maxima at 590 and 617 nm, respectively. It can be used with the 561 nm and 594 nm laser lines. BP Fluor 594 dye conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates often used for generation of stable signal in imaging and flow cytometry.

HY-D2961

SiR-CLIP	Fluorescent Dyes
SiR-CLIP is a SiR-carboxyl derivative used for covalent fluorescent labeling of CLIP tags .

HY-D2150

AF 430 maleimide	Fluorescent Dyes
AF 430 maleimide is a derivative of the yellow fluorescent dye AF 430. AF430 has an excitation wavelength of 425 nm and an emission wavelength of 542 nm. AF 430 maleimide contains maleimide groups that react with thiol groups to form covalent bonds. To achieve specific coupling of dye labels and biomolecules .

HY-D1870

Sulfo-Cy3-PEG3-biotin potassium

Fluorescent Dyes

Sulfo-Cy3-PEG3-biotin potassium is a biotin-modified derivative of Cy3 (Cyanine3) (HY-D0822) dye containing a TCO group. The TCO group of Sulfo-Cy3-PEG3-biotin potassium reacts with the tetrazine functional group in highly specific click chemistry to form a covalent bond. Thus, Sulfo-Cy3-PEG3-biotin potassium can be covalently bound to some biomolecules (especially antibodies, proteins, etc.) to track their location and dynamic changes in biological samples. And because it is labeled with biotin, it is often used in affinity chromatography experiments, such as immunoprecipitation.

HY-D2163

AF 430 amine	Fluorescent Dyes
AF 430 amine is a derivative of the yellow fluorescent dye AF 430. AF430 has an excitation wavelength of 425 nm and an emission wavelength of 542 nm. AF 430 amine can form covalent bonds through a condensation reaction between amino groups and molecules containing carboxyl groups. To achieve specific coupling of dye labels and biomolecules .

HY-W739603

Cy5-bifunctional dye potassium

Fluorescent Dyes

Cy5-bifunctional dye potassium is a water soluble bifunctional dye possessing two terminal NHS ester functions. The NHS esters can react specifically and efficiently with primary amines such as the side chain of lysine residue or aminosilane-coated surfaces at neutral or slight basic conditions to form a covalent bond. The dye is useful for the cross-conjugation of amines, and for other advanced labeling applications.

HY-D2738

BP Fluor 532 NHS ester

Fluorescent Dyes

BP Fluor 532 NHS ester is an amine reactive, yellow-emitting dye routinely used to label proteins or antibodies through primary amines (Lys), amine-modified oligonucleotides, and other amine-containing biomolecules. The labeling occurs most efficiently at pH 7-9 and forms a stable, covalent amide bond. BP Fluor 532 is a bright yellow-fluorescent dye with pH insensitive emission from pH 4 to pH 10. The excitation of BP Fluor 532 is ideally suited for the frequency-doubled Nd:YAG laser line. BP Fluor 532 can be conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates, and is often used for the generation of stable signals in imaging and flow cytometry.

HY-D2941

BGAF SNAP-AF	Fluorescent Dyes
BGAF (SNAP-AF) is a fluorescent diacetyl fluorescein-labeled SNAP tag fluorescent probe, specifically designed for the covalent labeling of SNAP-tag fusion proteins in living cells. BGAF utilizes the specific reaction of the human DNA repair protein hAGT to achieve specific fluorescent labeling of the target protein in the living cell environment .

HY-D3051

5(6)-carbonylated rhodamine 110 amine	Fluorescent Dyes
5(6)-carbonylated rhodamine 110 amine is a primary amine fluorescent reagent based on 5(6)-carbonylated rhodamine 110. Primary amines can be covalently linked with various functional groups such as carboxylic acids, active esters (e.g., NHS esters), and isothiocyanates to achieve labeling (Ex/Em = 502/527 nm).

HY-D2925

dTCOBG

dTCO-SNAP

Fluorescent Dyes

dTCOBG (dTCO-SNAP) is a SNAP-tag reactive benzylguanine (BG) analogue specifically designed for the specific labeling of immune cells. dTCOBG forms a stable thioether bond through the cysteine at the active site of SNAP-tag and O6-benzylguanine, resulting in a covalent linkage. dTCOBG demonstrates unique advantages in the labeling of macrophages derived from ER-HoxB8: it only labels SNAP-tag + macrophages, with no background signal in the control group. dTCOBG can be used for click chemistry labeling .

HY-D3054

5(6)-Rhodamine 6G amine	Fluorescent Dyes
5(6)-Rhodamine 6G amine is a primary amine fluorescent reagent based on Rhodamine 6G (HY-D0309). Primary amines can be covalently linked with various functional groups such as carboxylic acids, active esters (e.g., NHS esters), and isothiocyanates to achieve labeling (Ex/Em = 526/547 nm).

HY-D3360

JF630-HTL	Fluorescent Dyes
JF630-HTL is a fluorogenic Janelia Fluor (JF) Si-rhodamine HaloTag ligand. JF630-HTL covalently labels HaloTag fusion proteins in living cells. JF630-HTL displays low fluorescence in the unbound state, but exhibits a marked fluorescence enhancement upon binding to HaloTag. JF630-HTL can be used for live-cell imaging applications .

HY-D3277

PE-VF594

Fluorescent Dyes

PE-VF594 is a high-brightness fluorescent dye used in flow cytometry, primarily for labeling antibodies or streptavidin to help identify specific cell subpopulations. PE-VF594 is a tandem dye composed of two covalently linked fluorescent groups: one is phycoerythrin (PE), responsible for absorbing laser energy; the other is the receptor molecule VF594. Energy is transferred from PE to VF594 via fluorescence resonance energy transfer (FRET) mechanism (Ex/Em = 450-500 nm/614 nm) .

Cat. No.	Product Name	Type

HY-Y0623

N-Hydroxysuccinimide

5+ Cited Publications

HOSu; 1-Hydroxy-2,5-pyrrolidinedione

Biochemical Assay Reagents

N-Hydroxysuccinimide (HOSu; 1-Hydroxy-2,5-pyrrolidinedione) is a covalent crosslinker commonly used in bioconjugation technology with a primary amine group. N-Hydroxysuccinimide reacts with amino groups (-NH2) to form a stable amide bond, which can modify amino-containing biomolecules. N-Hydroxysuccinimide can be used, for example, for protein labeling with fluorescent dyes and enzymes, surface activation of chromatography supports, microbeads, nanoparticles and microarray slides, and chemical synthesis of peptides. N-Hydroxysuccinimide has a wide range of applications in biomaterial synthesis (such as collagen, chitosan crosslinking), drug delivery systems (such as hydrogel preparation) and tissue engineering .

HY-79647

Fmoc-OSu

N-(Fmoc-oxy)succinimide

Biochemical Assay Reagents

Fmoc-OSu (N-(Fmoc-oxy)succinimide) is an acylating agent that targets amino groups (-NH2). It can selectively protect the amino groups of amino acids by covalently binding with primary or secondary amines through nucleophilic substitution reactions. Fmoc-OSu forms a stable amide bond with the amino group to avoid side reactions of the amino group in peptide synthesis. It can also be used as a fluorescent labeling reagent to react with glycosylamines for efficient labeling of N-sugar chains. Fmoc-OSu can be used as an Fmoc protection strategy in peptide synthesis, and as a fluorescent labeling and analysis method for N-sugar chains .

HY-112624I

Dextran T3 (MW 3,000)

Dextran 3; Dextran D3; Dextran T3(MW 2400-3600)

Biochemical Assay Reagents

Dextran T3 (Dextran 3; Dextran T3(MW 2400-3600)) is a neural tracer and intestinal permeability probe that can move anterogradely and retrogradely in neuronal axons by passive diffusion. Dextran T3 (MW 3,000) is able to permeate across the intestinal epithelial cell membrane in the presence of cholera toxin-induced cytoskeletal disturbance. Dextran T3 (MW 3,000) is used as a fluorescent marker to rapidly label developing neurons (such as Xenopus retinal ganglion cells) and to assess intestinal barrier function. It can be used to study axonal transport in neuroanatomy and permeability changes in intestinal pathophysiology. The Dextran series of compounds are also natural polysaccharide drug carriers that can be connected to drugs through covalent bonding methods such as ester bonds, amide bonds or click chemistry, or self-assembled to form carriers such as nanoparticles and hydrogels. Dextran is biodegradable and biocompatible, and can achieve targeted delivery and controlled release of drugs. Dextran derivatives can prolong the half-life of drugs, increase local concentrations, and reduce the activity of immune clearance .

HY-W127719

Photobiotin acetate

Biochemical Assay Reagents

Photobiotin (acetate)It is a biological probe used to study biochemical processes such as protein interactions and enzymatic reactions. It is a molecule containing a photosensitive group, which can be combined with specific target molecules (such as proteins, nucleic acids, etc.) through photochemical cross-linking technology, so as to realize the labeling and detection of these molecules. During the photosensitive crosslinking process, Photobiotin (acetate)Can participate in the formation of covalent bonds and form stable compounds. In addition, the compound also has high biocompatibility and biological activity, so it is widely used in the field of biomedical research, such as enzymatic research, proteomics, western blotting and other aspects. Photobiotin (acetate) is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

Cat. No.	Product Name	Target	Research Area

HY-P11306

Biotin-(Oaa)3-epoxomicin	Proteasome NF-κB	Inflammation/Immunology
Biotin-(Oaa)₃-epoxomicin is a biotin-labeled form of Epoxomicin (HY-13821), prepared by conjugating Epoxomicin with biotin via three hydrophilic oxaacetyl amino acid (Oaa) linkers. Biotin-(Oaa)₃-epoxomicin is primarily used in proteomic studies for the capture, identification and target validation of proteasome complexes, to determine the intracellular targets of epoxomicin. Epoxomicin acts as a proteasome inhibitor and NF-κB inhibitor, which effectively blocks inflammatory responses in mouse ear edema assays. It inhibits proteasome activity via covalent binding to catalytic subunits including LMP7, X, MECL1 and Z, with the strongest inhibitory effect on chymotrypsin-like activity, and does not interfere with non-proteasomal proteases such as trypsin and papain .

HY-164725

FAPI-mFS	Radionuclide-Drug Conjugates (RDCs) FAP	Cancer
FAPI-mFS is an irreversible fibroblast activation protein (FAP) inhibitor, that enhances the uptake and retention time in cancer cells through its covalent binding property for FAP. FAPI-mFS can be used for cancer imaging the therapy, when labeled with radioactive 68Ga or 177Lu . FAPI-mFS can be used for the synthesis/research of Radionuclide-Drug Conjugates (RDCs).

HY-13443F2

Exendin-4, Cy5 labeled Exendin-4-Cys(Cy5)	Fluorescent Dye	Metabolic Disease
Exendin-4, Cy5-labeled (Exendin-4-Cys(Cy5)) is a covalently linked Cy5 fluorescent group to Exendin-4 (HY-13443), a GLP-1 receptor agonist. Exendin-4, Cy5-labeled enables the visualization imaging of β cells in vivo, especially for evaluating the expression dynamics of GLP-1R in type 2 diabetes models .

HY-P11253

DOTA-Bn-CA-170	VISTA	Inflammation/Immunology
DOTA-Bn-CA-170 is a molecular probe targeting the VISTA protein, with a K_d value of 0.124 nM. DOTA-Bn-CA-170 is formed by covalently linking the p-SCN-Bn-DOTA ligand with CA-170 (HY-101093). DOTA-Bn-CA-170 labeled with [ ⁶⁸Ga]Ga successfully achieves specific and high-contrast PET imaging of VISTA expression in various tumor-bearing mouse models. DOTA-Bn-CA-170 can be used for the study of VISTA-targeted immunotherapy .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-165424

NIR-BG2	Alkaloids Other Alkaloids Cananga odorata Plants Annonaceae Indole Alkaloids Source Classification	Fluorescent Dye Glycosidase
NIR-BG2 is a near-infrared fluorescent probe targeting senescence-associated β-galactosidase (SA-β-Gal). NIR-BG2 is activated by SA-β-Gal and undergoes hydrolysis to release electrophilic quinone methide that covalently binds to surrounding proteins for in situ labeling, with a 16-fold enhancement of fluorescence signal at 709 nm . NIR-BG2 is promising for research of vivo imaging of cellular senescence .

Cat. No.	Product Name	Chemical Structure

HY-15772S1

Osimertinib-13C,d3
Osimertinib- ¹³C,d₃ is the deuterium and ¹³C labeled Osimertinib. Osimertinib (AZD9291) is a covalent, orally active, irreversible, and mutant-selective EGFR inhibitor with an apparent IC50 of 12 nM against L858R and 1 nM against L858R/T790M, respectively.

HY-15772S

Osimertinib-d6
Osimertinib-d₆ is a deuterium labeled osimertinib. Osimertinib is a covalent, orally active, irreversible, and mutant-selective EGFR inhibitor with an apparent IC₅₀ of 12 nM against L858R and 1 nM against L858R/T790M. Osimertinib overcomes T790M-mediated resistance to EGFR inhibitors in lung cancer .

HY-114299S

Salcaprozate-d4 sodium

Salcaprozate-d4 (sodium) is a deuterated labeled Salcaprozate (sodium) . Salcaprozate sodium (SNAC), an oral absorption promoter, and has the potential as a delivery agent for oral forms of heparin and insulin. Salcaprozate sodium could increase passive transcellular permeation across small intestinal epithelia based on increased lipophilicity arising from non-covalent macromolecule complexation .

HY-14879S2

Avibactam sodium salt-13C5
Avibactam sodium salt- ¹³C₅ (NXL-104- ¹³C₅) is ¹³C labeled Avibactam (sodium). Avibactam sodium (NXL-104) is a covalent and reversible non-β-lactam β-lactamase inhibitor which inhibits β-lactamase TEM-1 and CTX-M-15 with IC₅₀s of 8 nM and 5 nM, respectively .

HY-114277S

Sotorasib-d7

Sotorasib-d₇ (AMG-510-d₇) is a deuterium-labeled Sotorasib (HY-114277). Sotorasib (AMG-510) is a first-in-class, orally bioavailable, and selective KRAS G12C covalent inhibitor. Sotorasib irreversibly inhibits KRAS G12C by locking it in an inactive GDP-bound state. Sotorasib leads to the regression of KRAS G12C‑mutated locally advanced or metastatic non‑small cell lung cancer (NSCLC) .

HY-113466S

4-Hydroxynonenal-d3

4-Hydroxynonenal-d₃ is the deuterium labeled 4-Hydroxynonenal. 4-Hydroxynonenal (4-HNE) is an α,β unsaturated hydroxyalkenal and an oxidative/nitrosative stress biomarker. 4-Hydroxynonenal is a substrate and an inhibitor of acetaldehyde dehydrogenase 2 (ALDH2). 4-Hydroxynonenal can modulate a number of signaling processes mainly through forming covalent adducts with nucleophilic functional groups in proteins, nucleic acids, and membrane lipids. 4-Hydroxynonenal plays an important role in cancer through mitochondria .

HY-W355129S

MeIQx-d3
MeIQx-d3 is the deuterium labeled MeIQx (HY-W355129) . MeIQx is a heterocyclic amine (HAs) compound and a dietary aromatic amine, which can bind covalently to hemoglobin. MeIQx is a mutagenic compound that induces liver tumors .

HY-16293S

Lurbinectedin-d3
Lurbinectedin-d₃ is deuterium labeled Lurbinectedin. Lurbinectedin (PM01183) is a DNA minor groove covalent binder with potent anti-tumour activity; inhibits RMG1 and RMG2 cell growth with IC₅₀ values of 1.25 and 1.16 nM, respectively .

HY-W010482S

3-Ethylaniline-d5
3-Ethylaniline-d₅ is the deuterium labeled 3-Ethylaniline (HY-W010482). 3-Ethylaniline is metabolized in vivo to electrophilic intermediates that covalently bind to DNA and that adducts are formed in the DNA of bladder. 3-Ethylaniline can be used for the research of bladder cancer .

HY-114436S

MRTX-1257-d6
MRTX-1257-d₆ is the deuterium labeled MRTX-1257 (HY-114436). MRTX-1257 is a selective, irreversible, covalent and orally active KRAS G12C inhibitor, with an IC₅₀ of 900 pM for KRAS dependent ERK phosphorylation in H358 cells .

HY-W653970

5-Azacytidine-15N4
5-Azacytidine- ¹⁵N₄ is ¹³C and ¹⁵N labeled 5-Azacytidine. 5-Azacytidine (Azacitidine; 5-AzaC; Ladakamycin) is a nucleoside analogue of cytidine that specifically inhibits DNA methylation. 5-Azacytidine is incorporated into DNA to covalently trap DNA methyltransferases and contributes to reverse epigenetic changes. 5-Azacytidine induces cell autophagy .

HY-114277S2

Sotorasib-d3
Sotorasib-d₃ (AMG-510-d₃) is deuterium labeled Sotorasib. Sotorasib (AMG-510) is a first-in-class, orally bioavailable, and selective KRAS G12C covalent inhibitor. Sotorasib irreversibly inhibits KRAS G12C by locking it in an inactive GDP-bound state. Sotorasib leads to the regression of KRAS G12C?mutated locally advanced or metastatic non?small cell lung cancer (NSCLC) .

HY-B0712S1

Ceftriaxone-13C2,d3 triethylammonium salt

Ceftriaxone-13C2,d3 triethylammonium salt is 13C and deuterated labeled Ceftriaxone (HY-B0712). Ceftriaxone (Ro 13-9904 free acid) is a broad spectrum β-lactam third-generation cephalosporin antibiotic, which has good antibacterial activity against a variety of gram-negative and positive bacteria. Ceftriaxone is a covalent inhibitor of GSK3β with IC₅₀ value of 0.78 mM. Ceftriaxone is an inhibitor of Aurora B. Ceftriaxone has anti-inflammatory, antitumor and antioxidant activities. Ceftriaxone can be used in the study of bacterial infections and meningitis .

HY-108568S

15-Deoxy-Δ-12,14-prostaglandin J2-d4

15-Deoxy-Δ-12,14-prostaglandin J2-d₄ is the deuterium labeled 15-Deoxy-Δ-12,14-prostaglandin J2. 15-Deoxy-Δ-12,14-prostaglandin J2 (15d-PGJ2) is a cyclopentenone prostaglandin and a metabolite of PGD2. 15-Deoxy-Δ-12,14-prostaglandin J2 is a selective PPARγ (EC₅₀ of 2 μM) and a covalent PPARδ agonist. 15-Deoxy-Δ-12,14-prostaglandin J2 promotes efficient differentiation of C3H10T1/2 fibroblasts to adipocytes with an EC₅₀ of 7 μM .

HY-105129AS

Pimonidazole-d10

Pimonidazole-d₁₀ is the deuterium labeled Pimonidazole. Pimonidazole is a novel hypoxia marker for complementary study of tumor hypoxia and cell proliferation in tumor . Pimonidazole accumulates in hypoxic cells via covalent binding with macromolecules or by forming reductive metabolites after reduction of its nitro group, it can be used for qualitative and quantitative assessment of tumor hypoxia .

HY-W779191

MeIQx-13C
MeIQx- ¹³C (2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline-2- ¹³C) is the ¹³C-labeled MeIQx (HY-W355129). MeIQx, a dietary aromatic amine, is mutagenic compound could be isolated from present in fried beef and beef extracts. MeIQx binds covalently to hemoglobin. MeIQx induces liver tumors .

HY-114899S

Azamethiphos-d6

Azamethiphos-d₆ is deuterated labeled Azamethiphos (HY-114899). Azamethiphos is an acetylcholinesterase inhibitor and insecticide. Azamethiphos covalently binds to acetylcholinesterase via phosphorylation, inhibits its activity, causes acetylcholine to accumulate in cholinergic synapses, triggers uncontrolled excitation of cholinergic sites, induces paralysis and leads to death. Azamethiphos can be used as a bath insecticide in salmonid aquaculture to control sea lice infestations, and it exerts acute toxicity to European lobster larvae, including mortality and movement disorders .

HY-A0004S

Decitabine-13C5

Decitabine- ¹³C₅ (5-Aza-2'-deoxycytidine- ¹³C₅) is ¹³C labeled Decitabine. Decitabine (NSC 127716) is an orally active deoxycytidine analogue antimetabolite and a DNA methyltransferase inhibitor. Decitabine incorporates into DNA in place of cytosine can covalently trap DNA methyltransferase to DNA causing irreversible inhibition of the enzyme. Decitabine induces cell G2/M arrest and cell apoptosis. Decitabine has potent anticancer activity .

HY-B0306S

Prothionamide-d5

Prothionamide-d₅ is deuterium labeled Prothionamide (HY-B0306). Prothionamide is an orally active thioamide antibacterial agent. Prothionamide is a substrate of OCT1 with a K_m value of 805.8 μM. Prothionamide reacts with NAD to form a covalent adduct, with the adduct being a tight-binding inhibitor of Mycobacterium tuberculosis and Mycobacterium leprae InhA. Prothionamide can effectively inhibit the growth of Mycobacterium tuberculosis (MIC = ~0.5 µg/mL) and Mycobacterium leprae. Prothionamide is used in the research of tuberculosis and leprosy .

HY-W778179

Benoxaprofen-13C,d3

Benoxaprofen- ¹³C, d₃ is the ¹³C-labeled Benoxaprofen (HY-13568). Benoxaprofen (LRCL 3794) is a nonsteroidal anti-inflammatory agent that blocks the biosynthesis of inflammatory mediators such as leukotrienes and prostaglandins by inhibiting 5-LOX, PGH2 synthase and cytochrome P-450. Benoxaprofen exhibits significant toxicity: it not only alters cellular redox status, uncouples oxidative phosphorylation and disrupts calcium ion homeostasis, but also causes liver injury through the formation of covalent adducts between its active metabolites and hepatic proteins. Benoxaprofen shows strong phototoxicity under ultraviolet irradiation, and induces erythrocyte lysis, mast cell degranulation and histamine release. Benoxaprofen is widely used in studies of urticaria and related phototoxic mechanisms .

HY-N0191S

Andrographolide-d
Andrographolide-d (Andrographis-d) is the deuterium labeled Andrographolide (HY-N0191). Andrographolide is a NF-κB inhibitor, which inhibits NF-κB activation through covalent modification of a cysteine residue on p50 in endothelial cells without affecting IκBα degradation or p50/p65 nuclear translocation. Andrographolide has antiviral effects.

HY-W000854S

3-Methoxybenzeneboronic acid-d3

3-Methoxybenzeneboronic acid-d₃ is the deuterium labeled 3-Methoxybenzeneboronic acid (HY-W000854). 3-Methoxybenzeneboronic acid (3-Methoxyphenylboronic acid) is a boronic acid derivative. 3-Methoxybenzeneboronic acid shows best suitable binding pattern at the active site by interacting non-covalently with amino acid residues of proteins. 3-Methoxybenzeneboronic acid is a biochemical reagent that can be used as a biological material or organic compound for life science related research .

HY-14879S7

Avibactam-13C5,15N sodium
Avibactam- ¹³C₅,15N sodium (NXL-104- ¹³C₅, ¹⁵N sodium) is the ¹³C- and ¹⁵N-labeled Avibactam (HY-14879). Avibactam (NXL-104) free acid is a covalent and reversible non-β-lactam β-lactamase inhibitor which inhibits β-lactamase TEM-1 and CTX-M-15 with IC₅₀s of 8 nM and 5 nM, respectively .

HY-B0828S

Triazophos-d5

Triazophos-d₅ (Hostathion 40EC-d₅) is the deuterium labeled Triazophos(HY-B0828) . Triazophos, a non-systemic insecticide and acaricide that acts as an acetylcholinesterase (AChE) inhibitor, covalently and irreversibly binds to the acetylcholine binding site, thus blocking the hydrolysis of acetylcholine and leading to hyperexcitability; it is effective against a variety of soil insects and mites, including aphids, thrips, midges, beetles, Lepidoptera larvae, cutworms, and spider mites in crops such as ornamentals, cotton, rice, maize, soybeans, oil palms, olives, and coffee.

Cat. No.	Product Name		Classification

HY-122609

XO44 PF-6808472		Alkynes
XO44 (PF-6808472) is a broad-spectrum covalent kinase probe. XO44 can bind in CDK2 and CDK1. XO44 also labels CDK4 proteins in cells .

HY-D2171A

AF488 DBCO ditriethylamine 1 Publications Verification		DBCO
AF488 DBCO ditriethylamineis a fluorescent dye and also a click chemistry reagent that can label azide-containing biomolecules. AF488 DBCO ditriethylaminemediates the coupling reaction with azide-modified 2'-OMe RNA oligonucleotides. DBCO is a bioorthogonal partner of azides and enables covalent coupling without copper (Ex/Em = 470/520 nm) .

HY-W053709A

Tetrazine-Amine monohydrochloride (4-(1,2,4,5-Tetrazin-3-yl)phenyl)methanamine (monohydrochloride); Tetrazine-NH2 monohydrochloride		Tetrazine
Tetrazine-Amine monohydrochloride is the monohydrochloride form of Tetrazine-Amine (HY-W053709). Tetrazine-amine is a Tetrazine linker that can be used to covalently label living cells by cycloaddition . Tetrazine-Amine (monohydrochloride) is a click chemistry reagent, it contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.

HY-151645

Alkyne-SNAP		Alkynes Labeling and Fluorescence Imaging
Alkyne-SNAP (compound 3) is an Alkyne-conjugated benzylguanine. The benzylguanine moiety reacts with the SNAP-tag, allowing irreversible and covalent labeling of SNAP fusion proteins with an additional alkyne functionality for further click chemistry conjugation .

HY-D2171

AF488 DBCO		DBCO
AF488 DBCO is a fluorescent dye and also a click chemistry reagent that can label azide-containing biomolecules. AF488 DBCO mediates the coupling reaction with azide-modified 2'-OMe RNA oligonucleotides. DBCO is a bioorthogonal partner of azides and enables covalent coupling without copper (Ex/Em = 470/520 nm) .

HY-151646

Alkyne-PEG5-SNAP Alkyne-PEG5-BG		Alkynes Labeling and Fluorescence Imaging
Alkyne-PEG5-SNAP is a click chemistry reagent containing an alkyne group. Alkyne-PEG5-SNAP can alkyne conjugated benzylguanine (BG), the BG moiety reacts specifically and rapidly with SNAP-tag, a polypeptide protein tag, allowing irreversible and covalent labeling of SNAP fusion proteins with an additional alkyne functionality suitable for further conjugation . Alkyne-PEG5-SNAP is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-W053709

Tetrazine-Amine (4-(1,2,4,5-Tetrazin-3-yl)phenyl)methanamine; Tetrazine-NH2		Tetrazine
Tetrazine-Amine ((4-(1,2,4,5-Tetrazin-3-yl)phenyl)methanamine) is a tetrazine linker that can be used to covalently label live cells through a cycloaddition . Tetrazine-Amine is a click chemistry reagent, it contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.

HY-126943

SAHA-BPyne		Alkynes
SAHA-BPyne is an activity-based protein profiling (ABPP) probe for detecting HDAC activity, which covalently labels the proximal proteins through a photoactivation. SAHA-BPyne inhibits HDAC activity in HeLa nuclear lysate with an IC₅₀ of less than 5 μM .

HY-D2926

BG-Tetrazine BG-Tz; SNAP-Tetrazine		Tetrazine
BG-Tetrazine (BG-Tz; SNAP-Tetrazine) is a SNAP tag substrate that contains a methyl tetrazine group. BG-Tetrazine can specifically covalently label the target protein of the intracellular SNAP-tag fusion. The tetrazine group it carries can rapidly and efficiently undergo a bioorthogonal reaction with functional groups such as trans cyclooctene (TCO), thereby enabling multiple labeling, functionalization or enrichment of proteins. BG-Tetrazine can be applied in click chemistry .

HY-W591390

6-Azidohexanoic acid STP ester		Azide
6-Azidohexanoic Acid STP Ester is an amine-reactive, water-soluble labeling reagent with an azide group and a terminal 4-Sulfo-2,3,5,6-tetrafluorophenyl (STP) group. 6-Azidohexanoic Acid STP Ester is used to modify proteins, antibodies, and other amine-containing biopolymers in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. STP esters can react with primary amines, forming covalent amide bonds, and typically display much better stability toward hydrolysis in aqueous media, resulting in more efficiency and better reproducible labeling of biopolymers.

HY-W127719

Photobiotin acetate		Azide
Photobiotin (acetate)It is a biological probe used to study biochemical processes such as protein interactions and enzymatic reactions. It is a molecule containing a photosensitive group, which can be combined with specific target molecules (such as proteins, nucleic acids, etc.) through photochemical cross-linking technology, so as to realize the labeling and detection of these molecules. During the photosensitive crosslinking process, Photobiotin (acetate)Can participate in the formation of covalent bonds and form stable compounds. In addition, the compound also has high biocompatibility and biological activity, so it is widely used in the field of biomedical research, such as enzymatic research, proteomics, western blotting and other aspects. Photobiotin (acetate) is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

HY-124610

DKFZ-633		Alkynes
DKFZ-633 is a potent KLK6 inhibitor and KLK6-specific probe with an IC₅₀ of 250 nM against human KLK6. DKFZ-633 covalently labels active KLK6 in a specific manner, and successfully pulls down and captures endogenous active KLK6 from cell-conditioned media. DKFZ-633 serves as a critical tool for investigating the function of KLK6 and its regulatory mechanisms in head and neck cancer .

Cat. No.	Product Name		Classification

HY-159194

DSPE-PEG2000-Cy5.5		Pegylated Lipids Fluorescent Lipids
DSPE-PEG2000-Cy5.5 is a phospholipid-fluorophore conjugate consisting of Cy5.5 covalently linked to 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE), serving as a surface label for liposomes in multimodal CT/optical imaging.DSPE-PEG2000-Cy5.5 can be used for the research of non-small cell lung cancer .

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