Search Result

Results for "

covalent bond

" in MedChemExpress (MCE) Product Catalog:

By Targets:	ADC Linker (7) Akt (2) Antibiotic (2) Antibody-Drug Conjugates (ADCs) (1) Apoptosis (2) Autophagy (1) Bacterial (10) Beta-lactamase (1) Biochemical Assay Reagents (51) Btk (3) Caspase (1) CDK (1) CHIKV (2) Cholinesterase (ChE) (1) DNA Stain (1) DNA/RNA Synthesis (1) Drug Derivative (1) EGFR (2) Elastase (1) Endogenous Metabolite (1) Epigenetic Reader Domain (1) ERK (1) Eukaryotic Initiation Factor (eIF) (1) Ferroptosis (1) Fluorescent Dye (10) Glutaminase (1) Glutathione Peroxidase (1) Histone Methyltransferase (1) HIV (2) Isocitrate Dehydrogenase (IDH) (1) JAK (3) JNK (1) LDLR (1) Liposome (4) MAP3K (1) MAPKAPK2 (MK2) (1) MetAP (2) Microtubule/Tubulin (1) Molecular Glues (1) NF-κB (2) p38 MAPK (1) PDHK (1) PDI (2) Penicillin-binding protein (PBP) (1) PI3K (2) PIN1 (2) Reactive Oxygen Species (ROS) (1) Reference Standards (4) SARS-CoV (4) STAT (1) ULK (1) Virus Protease (3)
By Research Areas:	Cancer (31) Cardiovascular Disease (3) Infection (12) Inflammation/Immunology (5) Metabolic Disease (4) Neurological Disease (1)
Click Chemistry:	DBCO (2) Azide (2) Tetrazine (3) Alkynes (2)
Oligonucleotides:	Pegylated Lipids (8) Polymers (2)

125

Inhibitors & Agonists

Bibliotecas de Screening

Fluorescent Dyes

Biochemical Assay Reagents

Inhibitory Antibodies

Click Chemistry

Oligonucleotides

Cat. No.	Nombre del producto	Target	Áreas de investigación	Chemical Structure

HY-152857

Muvalaplin LY3473329	LDLR	Cardiovascular Disease
Muvalaplin (LY3473329) is an orally active, selective small molecule inhibitor of lipoprotein (a) (Lp (a)) that disrupts the initial non-covalent interaction between apo(a) and apoB100, preventing the disulphide bond and Lp(a) formation. Muvalaplin reduces the levels of Lp (a) in transgenic mice and in cynomolgus monkeys .

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-100848

TX1-85-1 2 Publications Verification	EGFR	Cancer
TX1-85-1 is an irreversible Her3 (ErbB3) inhibitor with an IC₅₀ of 23 nM. TX1-85-1 is also the first selective Her3 ligand, which forms a covalent bond with Cys721 located in the ATP-binding site of Her3. TX1-85-1 induces partial degradation of Her3 protein and attenuates Her3-dependent signaling .

HY-W068119A

N-(2-Aminoethyl)maleimide hydrochloride 2-Maleimidoethylamine hydrochloride	Biochemical Assay Reagents	Cancer
N-(2-Aminoethyl)maleimide (2-Maleimidoethylamine) hydrochloride is a selective covalent binding agent for thiol groups (RSGs), covalently binding to thiols via an irreversible thioether bond to prepare MMP-2-sensitive nanosystems. Under near-neutral conditions, the maleimide group in N-(2-Aminoethyl)maleimide hydrochloride binds to thiol groups via a nucleophilic addition reaction, and can be used to modify polymers or biological interfaces, enhancing mucosal adhesion and regulating the surface charge of biological interfaces. N-(2-Aminoethyl)maleimide hydrochloride can optimize the adhesion performance of drug delivery carriers and cell interactions with biological interfaces, and is applied in transmucosal drug delivery systems (such as drug carriers for oral and bladder sites) and biomaterial surface engineering research, providing support for tissue implantation, regeneration, and related drug delivery .

HY-100433

PACMA 31 5 Publications Verification	PDI	Cancer
PACMA 31 is an irreversible, orally active protein disulfide isomerase (PDI) inhibitor with an IC₅₀ of 10 μM. PACMA 31 forms a covalent bond with the active site cysteines of PDI. PACMA 31 shows tumor targeting ability and significantly suppresses ovarian tumor growth without causing toxicity to normal tissues . PACMA 31 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-12903

Macozinone 5 Publications Verification PBTZ169	Bacterial Antibiotic	Infection
Macozinone (PBTZ169) is a bactericidal benzothiazinone and a potent DprE1 (decaprenylphosphoryl-β-d-ribose 2′-oxidase) inhibitor. Macozinone inhibits the essential flavoprotein DprE1 by forming a covalent bond with the active-site Cys387 residue. Macozinone has antituberculosis effect .

HY-112624J

Dextran T4 (MW 4,000) Dextran 4; Dextran D4; Dextran T4(MW 3200-4800)	Bacterial	Others
Dextran 4,000 is a mucus rheology modifier. The dextran molecules in Dextran 4,000 can reduce the cross-link density of mucus through osmotic effects and hydrogen bond substitution, and reduce viscoelasticity and improve the mucociliary/cough clearance index by destroying the DNA-mucin network structure in mucus. Dextran 4,000 has the ability to improve the rheological properties and clearance ability of cystic fibrosis (CF) sputum, and can be used in the study of inhalation therapy or aerosol delivery of mucostatic respiratory diseases. 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-172437

Secutrelvir S-892216	Virus Protease SARS-CoV	Infection
Secutrelvir is an oral SARS-CoV-2 3C-like protease (3CLpro) inhibitor and antiviral agent, with IC₅₀ values of 0.655 nM and 0.697 nM against SARS-CoV-2 3CLpro, respectively. Secutrelvir forms a reversible covalent bond with the catalytic cysteine C145 of SARS-CoV-2 3CLpro, thereby inhibiting viral replication. Secutrelvir exhibits activity against multiple SARS-CoV-2 variants and can be used in research related to coronavirus disease 2019 (COVID-19) .

HY-W440719

Cholesterol-PEG2000-MAL	Liposome	Cancer
Cholesterol-PEG2000-MAL is a PEG derivative and can be used to prepare liposome or nanoparticle due to its ability to self-assemble in water. The maleimide moiety is reactive with thiol molecule to form a covalent thioether bond.

HY-100338

CNX-500	Btk	Cancer
CNX-500 is a probe consisting of a covalent Btk inhibitor (CC-292) chemically linked to biotin. CNX-500 retains inhibitory activity against Btk (IC₅₀ of 0.5 nM) and the ability to form a covalent bond with Btk. CNX-500 has low inhibitory effects on kinase epidermal growth factor receptor, and upstream Src-family kinases including Syk and Lyn .

HY-106991A

Amustaline dihydrochloride S-303 dihydrochloride	HIV Bacterial CHIKV	Infection
Amustaline (S-303) dihydrochloride, a nucleic acid-targeted alkylator, is an efficient pathogen inactivation agent for blood components containing red blood cells. Amustaline dihydrochloride has three components: an acridine anchor (an intercalator that targets nucleic acids non-covalently), an effector (a bis-alkylator group that reacts with nucleophiles), and a linker (a small flexible carbon chain containing a labile ester bond that hydrolyzes at neutral pH to yield non-reactive breakdown products) .

HY-153244

MFH290 1 Publications Verification	CDK	Cancer
MFH290 is a potent and highly selective cyclin-dependent kinase 12/13 (CDK12/13) covalent inhibitor. MFH290 forms a covalent bond with Cys-1039 of CDK12 and exhibits excellent kinome selectivity and inhibits the phosphorylation of serine-2 in the C-terminal domain (CTD) of RNA-polymerase II (Pol II). MFH290 is used for cancer research .

HY-P99493

Cantuzumab ravtansine 1 Publications Verification IMGN242; huC242-DM4	Antibody-Drug Conjugates (ADCs) Microtubule/Tubulin	Cancer
Cantuzumab ravtansine (IMGN242; huC242-DM4), an ADC, is a humanized monoclonal antibody, huC242, covalently linked via a disulfide bond to DM4 (HY-12454). Cantuzumab ravtansine has broad antitumor efficacy against a range of CanAg-positive human tumor xenografts .

HY-D1364

Pyrene maleimide	Biochemical Assay Reagents	Others
Pyrene maleimide is a polyaromatic fluorescent hydrocarbon with a termininal maleimide group. The maleimide group will react with a thiol group to form a covalent bond.

HY-W190932

TAMRA-PEG2-Maleimide	Fluorescent Dye	Others
TAMRA-PEG2-Maleimide is a dye derivative of TAMRA (HY-135640) containing 4 PEG units. TAMRA-PEG2-Maleimide contains a maleimide group that can react with a thiol group to form a covalent bond.

HY-W800805

DOPE-Mal	Liposome	Cancer
DOPE-Mal is a synthetic analog of naturally-occurring PE containing 18:1 fatty acids at the sn-1 and sn-2 positions with a terminal maliemide group. The maleimide group will react with a thiol group to form a covalent bond. The hydrophilic PEG spacer increases solubility in aqueous media.

HY-W440833

DSPE-PEG3400-azide	Liposome	Others
DSPE-PEG3400-azide is a polydisperse PEG covalently attached to a phospholipid. The polymer is an amphiphilic molecule with hydrophobic fatty acid chains and hydrophilic PEG head which enables lipid bilayer or micelles formation in water. The phospholipid PEG can be used to prepare liposome or nanoparticles for targeted drug delivery and is reactive with alkyne to form triazole bond.

HY-100849

JAK 3i	JAK	Inflammation/Immunology
JAK3i is a highly selective JAK3 inhibitor (IC₅₀: 0.43 nM). JAK3i forms a covalent bond with a cysteine in JAK3, but not the closely related kinase domains in JAK1, JAK2, or TYK2. JAK3i abolishes IL-2-driven T-cell proliferation in vivo and has the potential for autoimmune disease research .

HY-W190862

Biotin-PEG10-azide Biotin-PEG10-N3	Biochemical Assay Reagents	Others
Biotin-PEG10-azide (Biotin-PEG10-N3) is a PEG derivative composed of biotin, 10 PEG units, and an azide group. Biotin can form a stable non-covalent bond with streptavidin. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-driven alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.

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-179237

MK2-IN-8	MAPKAPK2 (MK2)	Others
MK2-IN-8 (Compound 42) is a covalent MK2 kinase inhibitor. MK2-IN-8 forms a unique covalent bond with the catalytic lysine, thereby demonstrating that the fluorosulfonate can effectively target the catalytic lysine in kinases.

HY-174914

Biotin-PEG4-mal	Biochemical Assay Reagents	Others
Biotin-PEG4-mal is a PEG derivative composed of Biotin, 4 PEG units and Maleimide. Biotin can form a stable non-covalent bond with streptavidin.

HY-174938

Biotin-PEG3-Iodoacetamide	Biochemical Assay Reagents	Others
Biotin-PEG3-Iodoacetamide is a PEG derivative composed of Biotin, 3 PEG units, and Iodoacetamide. Biotin can form a stable non-covalent bond with streptavidin.

HY-D2317

HaloFlipper 30	Fluorescent Dye	Others
HaloFlipper 30 is a fluorescent probe that covalently reacts with HaloTag fusion proteins to form an ester bond, which allows the probe to be stably attached to membrane structures. HaloFlipper 30 has high specificity, precision and good cell permeability .

HY-W848699

FAM NHS ester, 6-isomer	Fluorescent Dye	Others
FAM NHS ester, 6-isomer is a hydrophilic fluorophore. The NHS ester 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.

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-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-173301

PDHK1-IN-3	PDHK	Inflammation/Immunology Cancer
PDHK1-IN-3 (Compound 29) is a selective PDHK1 inhibitor with an IC₅₀ of 0.028 μM against PDHK1 and an IC₅₀ of 0.120 μM against PDHK2. PDHK1-IN-3 inhibits the activity of PDHK1 by forming a covalent bond with Lys299 in PDHK1. PDHK1-IN-3 can be used in the research of autoimmune diseases, inflammatory diseases, and cancer .

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-164895

PIN1 degrader-1	PIN1	Cancer
PIN1 degrader-1 (Compound 158H9) is the inhibitor for proline cis trans isomerase (Pin1) with an IC₅₀ of 21.5 nM. PIN1 degrader-1 forms covalent bond with Cys113 of Pin1, induces conformational changes in Pin1, reduces its stability, and leads to a proteasome-dependently degradation. PIN1 degrader-1 inhibits the cell viability of multi cancer cells, and can be used in cancer research .

HY-W1048669B

Biotin-PEG10000-DMG	Biochemical Assay Reagents	Others
Biotin-PEG10000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-118112

4-N-Maleimidobenzoicacid-NHS	Biochemical Assay Reagents	Others
4-N-Maleimidobenzoicacid-NHS is a PEG linker that finds utility in bioconjugation endeavors and protein labeling ventures. Specifically designed for selective reaction with thiol groups, the maleimide group establishes covalent linkages, thereby facilitating the coupling of proteins, peptides, or diverse molecules to thiol-bearing biomolecules. The NHS ester is able to react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic conditions to form a covalent bond.

HY-170429

BJP-07-017-3	PIN1	Cancer
BJP-07-017-3 is the inhibitor for proline cis trans isomerase (Pin1) with an IC₅₀ of 9 nM. BJP-07-017-3 forms covalent bond with Cys113 of Pin1, induces conformational changes in Pin1, reduces its stability, and leads to a proteasome-dependently degradation .

HY-164002

PF-303	Btk	Others
PF-303 is a potent, oral inhibitor of Bruton's tyrosine kinase (BTK) (IC₅₀=0.64 nM). The melamine portion of PF-303 forms a covalent bond with BTK's Cys481, which is reversible and exhibits a high selectivity compared to irreversible covalent BTK inhibitors. PF-303 can be used to model and study the effects of BTK inhibition on the mature immune system, including effects on B-cell subsets, antibody responses, and T-cell-mediated activation .

HY-138966

SM1-71-R	Akt	Cancer
SM1-71-R is a reversible analog o SM1-71 (HY-136848). SM1-71-R lacks the acrylamide warhead and therefore cannot form a covalent bond with the kinase. SM1-71-R can be used as a control compound for SM1-71 .

HY-W591479

MC-Val-Ala-NHS ester	ADC Linker	Cancer
MC-Val-Ala-NHS ester is a cleavable ADC linker with a malimide group and an NHS ester group. The Val-Ala linkers can be cleaved by Cathepsin B. Maleimide group is reactive toward thiol groups. MC is reactive with thiol moieties. The NHS ester is able to react specifically and efficiently with amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond.

HY-133883

Cyanine7.5 amine	Fluorescent Dye	Others
Cyanine7.5 amine is a near-infrared Cy7.5-based dye and also a substrate for amide bond coupling (Ex/Em = 788 nm/808 nm). Cyanine7.5 amine contains a free amino group and can be used for coupling with activated carboxylic acid derivatives .

HY-178321

UNC10088	Molecular Glues Histone Methyltransferase	Cancer
UNC10088 is a molecular glue targeting NSD2. UNC10088 mediates the formation of a stable ternary complex between SCFFBXO22 and the NSD2 PWWP1 domain. UNC10088 promotes ubiquitination of the SCFFBXO22-dependent NSD2 PWWP1 domain through reversible covalent bonding with the C326 region of FBXO22. UNC10088 could be used in cancer research .

HY-178692

JNK-IN-25	JNK	Neurological Disease Inflammation/Immunology Cancer
JNK-IN-25 is a potent and selective JNK1/2/3 inhibitor with IC₅₀values of 1.54 (JNK1), 1.99 (JNK2), and 0.75 nM (JNK3), respectively. JNK-IN-25 inhibits phosphorylation of c-Jun in cells via covalently bonding with the conserved cysteine of JNK1/2/3. JNK-IN-25 can be used for research of cancer, inflammatory and neurodegenerative diseases .

HY-W096120A

Azide-PEG1-Desthiobiotin	Biochemical Assay Reagents	Others
Azide-PEG1-Desthiobiotin is a PEG derivative consisting of desthiobiotin, 1 PEG unit, and an azide group. Biotin can form a stable non-covalent bond with streptavidin. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-driven alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups .

HY-161912

5TTU	JAK	Others
5TTU is a covalent JAK3 inhibitor. 5TTU not only forms a covalent bond with CYS909 but also establishes a hydrogen bond with the NH group of CYS909 .

HY-151758

Methyltetrazine-PEG12-NHS ester	ADC Linker	Others
Methyltetrazine-PEG12-NHS ester is a click chemistry reagent containing an azide group. Methyltetrazine-PEG12-NHS ester reacts with compounds containing TCO to form stable covalent bonds .

HY-174917

Biotin-PEG4-Acrylamide	Biochemical Assay Reagents	Others
Biotin-PEG Acrylamide is a PEG derivative composed of Biotin, 4 PEG units and Acrylamide. Biotin can form a stable non-covalent bond with streptavidin.

HY-174956H

6-Arm-PEG10000-Biotin	Biochemical Assay Reagents	Others
6-Arm-PEG10000-Biotin is a PEG derivative containing a biotin group. Biotin can form a stable non-covalent bond with streptavidin .

HY-W440831

DSPE-PEG1000-azide	Liposome	Others
DSPE-PEG1000-azide is a phospholipid with covalently attached polydisperse PEG. This polymer is commonly used for the preparation of long circulating liposomes. The azide moiety is reactive with alkyne to form a stable triazole bond.

HY-W395122

Mal-PEG1-PNP-carbonate	Biochemical Assay Reagents	Others
Mal-PEG1-PNP-carbonate is a amine-reactive compound. PNP is a good leaving group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-155979

SARS-CoV-2 3CLpro-IN-16	SARS-CoV	Infection
SARS-CoV-2 3CLpro-IN-16 (Compound 3a) is a covalent SARS-CoV-2 3CLpro inhibitor (IC₅₀: 2.124 μM). SARS-CoV-2 3CLpro-IN-16 binds to the active site and forms a covalent bond with Cys145 of 3CLpro .

HY-158378

Trivalent hydroxyarsinothricn R-AST-OH	Glutaminase	Cancer
Trivalent hydroxyarsinothricn (R-AST-OH) is a covalent and irreversible kidney-type glutaminase (KGA) inhibitor. Trivalent hydroxyarsinothricn binds to the glutamine binding site and forms a covalent bond with an active site cysteine residue. Trivalent hydroxyarsinothricn selectively kills triple-negative breast cancer (TNBC) cells and is not cytotoxic to the control cell line. KGA is the enzyme that controls glutamine metabolism and is correlated with tumor malignancy .

HY-D2104

TAMRA-PEG7-Maleimide	Fluorescent Dye	Others
TAMRA-PEG7-Maleimide is a dye derivative of TAMRA (HY-135640) containing 7 PEG units. TAMRA-PEG7-Maleimide contains a maleimide group that can react with a thiol group to form a covalent bond.

HY-W591975

Alkyne maleimide	Biochemical Assay Reagents	Others
Alkyne maleimide is a bifunctional linker reagent with a terminal malimide group and a propargyl group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The propargyl group can be linked to azide-containing biomolecules via Click Chemistry.

Cat. No.	Nombre del producto

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

HY-L913

Tyrosine Focused Covalent Fragment Library

104 compounds

Recently, significant advancements in tyrosine-targeting electrophiles have primarily occurred in the field of protein-protein interactions (PPIs), where cysteine residues are often underrepresented and novel chemistries are needed to address these interfaces. In this context, tyrosines are frequently more accessible compared to more buried binding sites. Moreover, they are commonly found at "hot spots," which are functional epitopes of PPIs, with 12.3% of the residues consisting of tyrosines. This prevalence is likely due to the hydrophobic nature of tyrosine, its ability to participate in aromatic π-interactions, and its capacity for hydrogen bonding. Beyond PPIs, some progress has also been made in covalent tyrosine targeting in other areas where more commonly addressed side chains are lacking. Even though tyrosine has a slightly lower pKa value compared to the protonated lysine side chain (approximately 10 vs. 10.5 for the unprotected amino acid side chains), significantly less progress has been made in the development of tyrosine-targeted covalent ligands compared to lysine. This is likely due to the reduced flexibility of the tyrosine side chain and the greater steric hindrance of its hydroxy group, which makes it more challenging to adopt suitable reaction geometries.

Through careful selection, we constructed a structural filter containing over 110 electrophilic groups. By analyzing the electrophilic fragments selected by the structural filter, we removed any molecules with trivial or undesirable structural features. Ultimately, we obtained 124 fragment molecules which can target tyrosine residue and can be used for fragment-based covalent drug discovery.

HY-L908

Lead-like Covalent Screening Library

1,248 compounds

Small molecule covalent inhibitors, or irreversible inhibitors, are a type of inhibitors that exert their biological functions by irreversibly binding to target through covalent bonds. Compared with non-covalent inhibitors, covalent inhibitors have obvious advantages in bioactivity, such that covalent warheads can target rare residues of a particular target protein, thus leading to the development of highly selective inhibitors and achieving a more complete and continued target occupancy in living systems. In recent years, the distinct strengths of covalent inhibitors in overcoming drug resistance had been recognized. However, toxicity can be a real challenge related to this class of therapeutics due to their potential for off-target reactivity and has led to these drugs being disfavored as a drug class. The drug design and optimization of covalent inhibitors has become a hot spot in drug discovery.

MCE Lead-like Covalent Screening Library offers a valuable resource of 1,049 lead-like compounds with commonly used covalent warheads. These warheads, such as acrylamide, activated terminal alkyne, acyloxymethyl ketone, and boronic acid, are capable of reacting with specific amino acid residues, including cysteine, lysine, serine, and histidine. The inclusion of these reactive warheads in the library allows researchers to explore the potential of covalent inhibition, a powerful approach in drug discovery.

Cat. No.	Nombre del producto	Type

HY-W190932

TAMRA-PEG2-Maleimide	Fluorescent Dyes
TAMRA-PEG2-Maleimide is a dye derivative of TAMRA (HY-135640) containing 4 PEG units. TAMRA-PEG2-Maleimide contains a maleimide group that can react with a thiol group to form a covalent bond.

HY-D2317

HaloFlipper 30	Fluorescent Dyes
HaloFlipper 30 is a fluorescent probe that covalently reacts with HaloTag fusion proteins to form an ester bond, which allows the probe to be stably attached to membrane structures. HaloFlipper 30 has high specificity, precision and good cell permeability .

HY-W848699

FAM NHS ester, 6-isomer	Fluorescent Dyes
FAM NHS ester, 6-isomer is a hydrophilic fluorophore. The NHS ester 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.

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-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-133883

Cyanine7.5 amine	Fluorescent Dyes
Cyanine7.5 amine is a near-infrared Cy7.5-based dye and also a substrate for amide bond coupling (Ex/Em = 788 nm/808 nm). Cyanine7.5 amine contains a free amino group and can be used for coupling with activated carboxylic acid derivatives .

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-D2104

TAMRA-PEG7-Maleimide	Fluorescent Dyes
TAMRA-PEG7-Maleimide is a dye derivative of TAMRA (HY-135640) containing 7 PEG units. TAMRA-PEG7-Maleimide contains a maleimide group that can react with a thiol group to form a covalent bond.

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-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-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-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 .

Cat. No.	Nombre del producto	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-112624B

Dextran T70 (MW 70,000)

Dextran 70; Dextran D70; Dextran T70(MW 64000-76000)

Biochemical Assay Reagents

Dextran 70,000 is a high molecular weight polysaccharide formed by glucose linked by α-(1→6) glycosidic bonds. Dextran 70,000 can expand blood volume through colloidal osmotic pressure effect and inhibit cell adhesion and platelet aggregation through steric hindrance. At the same time, Dextran 70,000 can be used as a drug carrier to achieve targeted delivery through endocytosis. Dextran 70,000 is biologically inert and has low immunogenicity. It can be used for clinical blood volume expansion, anti-thrombotic research, and evaluation of vascular permeability in in vitro experiments. It can also be combined with fluorescent dyes for cell tracking and drug delivery research. 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-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-W068119A

N-(2-Aminoethyl)maleimide hydrochloride

2-Maleimidoethylamine hydrochloride

Biochemical Assay Reagents

N-(2-Aminoethyl)maleimide (2-Maleimidoethylamine) hydrochloride is a selective covalent binding agent for thiol groups (RSGs), covalently binding to thiols via an irreversible thioether bond to prepare MMP-2-sensitive nanosystems. Under near-neutral conditions, the maleimide group in N-(2-Aminoethyl)maleimide hydrochloride binds to thiol groups via a nucleophilic addition reaction, and can be used to modify polymers or biological interfaces, enhancing mucosal adhesion and regulating the surface charge of biological interfaces. N-(2-Aminoethyl)maleimide hydrochloride can optimize the adhesion performance of drug delivery carriers and cell interactions with biological interfaces, and is applied in transmucosal drug delivery systems (such as drug carriers for oral and bladder sites) and biomaterial surface engineering research, providing support for tissue implantation, regeneration, and related drug delivery .

HY-112624J

Dextran T4 (MW 4,000)

Dextran 4; Dextran D4; Dextran T4(MW 3200-4800)

Biochemical Assay Reagents

Dextran 4,000 is a mucus rheology modifier. The dextran molecules in Dextran 4,000 can reduce the cross-link density of mucus through osmotic effects and hydrogen bond substitution, and reduce viscoelasticity and improve the mucociliary/cough clearance index by destroying the DNA-mucin network structure in mucus. Dextran 4,000 has the ability to improve the rheological properties and clearance ability of cystic fibrosis (CF) sputum, and can be used in the study of inhalation therapy or aerosol delivery of mucostatic respiratory diseases. 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-141572

1,2-Dioleoyl-sn-glycerol

sn-1,2-Dioleoylglycerol; 18:1/18:1-DG

Biochemical Assay Reagents

1,2-Dioleoyl-sn-glycerol (sn-1,2-Dioleoylglycerol; 18:1/18:1-DG) is a glycerolipid located on the plasma membrane. 1,2-Dioleoyl-sn-glycerol consists of two fatty acid chains covalently linked to a single glycerol molecule by means of an ester bond. 1,2-Dioleoyl-sn-glycerol is an analog of the protein kinase C-activating second messenger DAG. 1,2-Dioleoyl-sn-glycerol has been used as a source of diacylglycerol in the diacylglycerol O-acyltransferase 1 (DGAT1) assay. 1,2-Dioleoyl-sn-glycerol can induce acrosome reaction in human sperm .

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-W591476

m-PEG1000-thiol

mPEG1000-SH

Biochemical Assay Reagents

m-PEG1000-thiol is a surface modifier that can modify DNA thiolation and is used in the synthesis of gold nanorods (AuNR). m-PEG1000-thiol can load thiolated DNA onto AuNR, form a covalent bond with the surface of gold nanoparticles through the thiol group, and stabilize the nanoparticles by the steric hindrance effect of the polyethylene glycol chain, preventing aggregation and enhancing its biocompatibility. m-PEG1000-thiol can also provide a platform for the subsequent coupling of biomolecules (such as DNA, antibodies) by replacing surfactants (such as CTAB) on the surface of nanoparticles, thereby exerting its activity in promoting the functionalization of nanomaterials [2].

HY-112624K

Dextran T5 (MW 5,000)

Dextran 5; Dextran D5; Dextran T5(MW 4500-5500)

Biochemical Assay Reagents

Dextran T5 (MW 5,000) is a sulfated polysaccharide anti-apoptotic and autophagic agent. Dextran T5 (MW 5,000) has sulfated groups and interacts with cell membranes by mimicking endogenous glycosaminoglycans, inhibiting the mitochondrial apoptotic pathway and delaying DNA fragmentation to exert anti-apoptotic activity. Dextran T5 (MW 5,000) also promotes the conversion of LC3-I to LC3-II and the formation of autophagosomes to activate the autophagic pathway. Dextran T5 (MW 5,000) can prolong the survival cycle of CHO cells and increase the production of recombinant erythropoietin (EPO). 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 drug half-life, increase local concentration and reduce immune clearance activity. 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-W115727A

Polyacrylamide,Anion,Mw 14-16 million

PAM,Anion,Mw 14-16 million

Biochemical Assay Reagents

Polyacrylamide, Anion, Mw 14-16 million is a multifunctional high molecular weight anionic polyacrylamide copolymer. The anionic properties of Polyacrylamide, Anion, Mw 14-16 million enable it to be used as a flocculant to achieve charge neutralization and aggregation, while its high molecular weight properties provide viscoelastic properties for fluid applications. Polyacrylamide series materials can maintain enzyme activity in enzyme immobilization, achieve controlled release as a drug carrier, respond to temperature/pH stimulation as a smart material, and can also be used for in vitro toxin adsorption and soft tissue filling through mechanisms such as physical embedding, covalent bonding or chemical cross-linking. Polyacrylamide can be used in biomedical engineering, environmental management and industrial applications .

HY-112624E

Dextran T0.8 (MW 800)

Dextran 0.8; Dextran D0.8; Dextran T0.8(MW 640-960)

Biochemical Assay Reagents

Dextran T0.8 (Dextran 0.8; Dextran T0.8(MW 640-960)) is a food additive with a porous network structure that exhibits strong hydration capacity and low browning activity. Dextran T0.8 (MW 800) can improve the coagulation of dairy products and is used as a prebiotic in baked goods. Dextran T0.8 (MW 800) is non-toxic to HeLa cells at a concentration of ~500 μg/mL and has a low relative browning rate in the Maillard reaction. 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-112624H

Dextran T2 (MW 2,000)

Dextran 2; Dextran D2; Dextran T2(MW 1600-2400)

Biochemical Assay Reagents

Dextran T2 (Dextran 2; Dextran T2(MW 1600-2400)) is a natural high molecular weight polysaccharide, the glycosidic bonds in its structure can be recognized by endo-dextranase and exo-dextranase. Dextran T2 (MW 2,000) breaks the glycosidic bonds in the enzymatic hydrolysis mechanism, releasing products such as D-glucose, Isomaltose (IM₂), and Isomaltotriose (IM₃). Dextran T2 (MW 2,000) can be used as a model substrate to characterize the catalytic properties of dextranase (such as optimal pH, temperature and product specificity), and to study enzymatic mechanism research and polysaccharide degradation pathways in glycobiology. The Dextran series of compounds are also a natural polysaccharide drug carrier, which 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 drug half-life, increase local concentration and reduce immune clearance activity .

HY-D1364

Pyrene maleimide	Biochemical Assay Reagents
Pyrene maleimide is a polyaromatic fluorescent hydrocarbon with a termininal maleimide group. The maleimide group will react with a thiol group to form a covalent bond.

HY-W440833

DSPE-PEG3400-azide	Biochemical Assay Reagents
DSPE-PEG3400-azide is a polydisperse PEG covalently attached to a phospholipid. The polymer is an amphiphilic molecule with hydrophobic fatty acid chains and hydrophilic PEG head which enables lipid bilayer or micelles formation in water. The phospholipid PEG can be used to prepare liposome or nanoparticles for targeted drug delivery and is reactive with alkyne to form triazole bond.

HY-W190862

Biotin-PEG10-azide

Biotin-PEG10-N3

Biochemical Assay Reagents

Biotin-PEG10-azide (Biotin-PEG10-N3) is a PEG derivative composed of biotin, 10 PEG units, and an azide group. Biotin can form a stable non-covalent bond with streptavidin. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-driven alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.

HY-174914

Biotin-PEG4-mal	Biochemical Assay Reagents
Biotin-PEG4-mal is a PEG derivative composed of Biotin, 4 PEG units and Maleimide. Biotin can form a stable non-covalent bond with streptavidin.

HY-174938

Biotin-PEG3-Iodoacetamide	Biochemical Assay Reagents
Biotin-PEG3-Iodoacetamide is a PEG derivative composed of Biotin, 3 PEG units, and Iodoacetamide. Biotin can form a stable non-covalent bond with streptavidin.

HY-W1048669B

Biotin-PEG10000-DMG	Biochemical Assay Reagents
Biotin-PEG10000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W096120A

Azide-PEG1-Desthiobiotin

Biochemical Assay Reagents

Azide-PEG1-Desthiobiotin is a PEG derivative consisting of desthiobiotin, 1 PEG unit, and an azide group. Biotin can form a stable non-covalent bond with streptavidin. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-driven alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups .

HY-174917

Biotin-PEG4-Acrylamide	Biochemical Assay Reagents
Biotin-PEG Acrylamide is a PEG derivative composed of Biotin, 4 PEG units and Acrylamide. Biotin can form a stable non-covalent bond with streptavidin.

HY-174956H

6-Arm-PEG10000-Biotin	Biochemical Assay Reagents
6-Arm-PEG10000-Biotin is a PEG derivative containing a biotin group. Biotin can form a stable non-covalent bond with streptavidin .

HY-W440831

DSPE-PEG1000-azide	Biochemical Assay Reagents
DSPE-PEG1000-azide is a phospholipid with covalently attached polydisperse PEG. This polymer is commonly used for the preparation of long circulating liposomes. The azide moiety is reactive with alkyne to form a stable triazole bond.

HY-174892B

Biotin-PEG20-NHS ester	Biochemical Assay Reagents
Biotin-PEG20-NHS ester is a PEG derivative composed of Biotin, 20 PEG units, and NHS ester. Biotin can form a stable non-covalent bond with streptavidin. NHS ester can bind to amino acids or other molecules containing amino groups .

HY-W096120B

Azide-PEG2-Desthiobiotin

Biochemical Assay Reagents

Azide-PEG2-Desthiobiotin is a PEG derivative consisting of desthiobiotin, 2 PEG units, and an azide group. Biotin can form a stable non-covalent bond with streptavidin. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-driven alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups .

HY-174904

Dde Biotin-PEG4-COOH	Biochemical Assay Reagents
Dde Biotin-PEG4-COOH is a PEG derivative composed of Biotin, 5 PEG units, and a carboxyl group (-COOH). Biotin can form a stable non-covalent bond with streptavidin. The carboxyl group can easily form a stable amide bond with the amino group, and can also form an ester bond with the hydroxyl group.

HY-W1048669A

Biotin-PEG5000-DMG	Biochemical Assay Reagents
Biotin-PEG5000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W796277

Dde Biotin-PEG4	Biochemical Assay Reagents
Dde Biotin-PEG4 is a PEG derivative composed of Biotin, 5 PEG units, and Dde protecting group. Biotin can form a stable non-covalent bond with streptavidin.

HY-W1048669I

Biotin-PEG3400-DMG	Biochemical Assay Reagents
Biotin-PEG3400-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W1048669H

Biotin-PEG2000-DMG	Biochemical Assay Reagents
Biotin-PEG2000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W1048669E

Biotin-PEG1000-DMG	Biochemical Assay Reagents
Biotin-PEG1000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-174915

Biotin-PEG7-OH	Biochemical Assay Reagents
Biotin-PEG7-OH is a PEG derivative composed of Biotin, 7 PEG units and a hydroxyl (-OH) group. Biotin can form a stable non-covalent bond with streptavidin.

HY-174892A

Biotin-PEG32-NHS ester	Biochemical Assay Reagents
Biotin-PEG32-NHS ester is a PEG derivative composed of Biotin, 32 PEG units, and NHS ester. Biotin can form a stable non-covalent bond with streptavidin. NHS ester can bind to amino acids or other molecules containing amino groups .

HY-W096120C

Azide-PEG4-Desthiobiotin

Biochemical Assay Reagents

Azide-PEG4-Desthiobiotin is a PEG derivative consisting of desthiobiotin, 4 PEG unit, and an azide group. Biotin can form a stable non-covalent bond with streptavidin. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-driven alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups .

Cat. No.	Nombre del producto	Target	Research Area	Image

HY-P99493

Cantuzumab ravtansine 1 Publications Verification IMGN242; huC242-DM4	Antibody-Drug Conjugates (ADCs) Microtubule/Tubulin	Cancer
Cantuzumab ravtansine (IMGN242; huC242-DM4), an ADC, is a humanized monoclonal antibody, huC242, covalently linked via a disulfide bond to DM4 (HY-12454). Cantuzumab ravtansine has broad antitumor efficacy against a range of CanAg-positive human tumor xenografts .

HY-16189

Elliptinium acetate NSC 264137; Celiptium	DNA Stain	Cancer
Elliptinium acetate (NSC 264137) is a DNA intercalating agent that is highly cytotoxic to L1 210 cells and covalently binds to nucleic acids from L1210 cells. Elliptinium acetate can be used in cancer research, particularly in metastatic breast cancer .

Cat. No.	Nombre del producto		Classification

HY-151835

DBCO-PEG24-NHS ester		DBCO
DBCO-PEG24-NHS ester is a click chemistry reagent. DBCO-PEG24-NHS ester is a click chemistry PEG reagent containing NHS ester that is able to react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond. The hydrophilic PEG spacer arm improves water solubility and provides a long and flexible connection that minimizes steric hindrance involved with ligation. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research use only .

HY-100433

PACMA 31 5 Publications Verification		Alkynes
PACMA 31 is an irreversible, orally active protein disulfide isomerase (PDI) inhibitor with an IC₅₀ of 10 μM. PACMA 31 forms a covalent bond with the active site cysteines of PDI. PACMA 31 shows tumor targeting ability and significantly suppresses ovarian tumor growth without causing toxicity to normal tissues . PACMA 31 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-151827

DBCO-PEG2-NHS ester		DBCO
DBCO-PEG2-NHS ester is a click chemistry reagent containing an azide group. DBCO-PEG2-NHS ester is a click chemistry PEG reagent containing NHS ester that is able to react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond. The hydrophilic PEG spacer arm improves water solubility and provides a long and flexible connection that minimizes steric hindrance involved with ligation. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research use only .

HY-W440833

DSPE-PEG3400-azide		Azide
DSPE-PEG3400-azide is a polydisperse PEG covalently attached to a phospholipid. The polymer is an amphiphilic molecule with hydrophobic fatty acid chains and hydrophilic PEG head which enables lipid bilayer or micelles formation in water. The phospholipid PEG can be used to prepare liposome or nanoparticles for targeted drug delivery and is reactive with alkyne to form triazole bond.

HY-151758

Methyltetrazine-PEG12-NHS ester		Tetrazine
Methyltetrazine-PEG12-NHS ester is a click chemistry reagent containing an azide group. Methyltetrazine-PEG12-NHS ester reacts with compounds containing TCO to form stable covalent bonds .

HY-W440831

DSPE-PEG1000-azide		Azide
DSPE-PEG1000-azide is a phospholipid with covalently attached polydisperse PEG. This polymer is commonly used for the preparation of long circulating liposomes. The azide moiety is reactive with alkyne to form a stable triazole bond.

HY-151691

Trisulfo-Cy3 Methyltetrazine		Tetrazine
Trisulfo-Cy3 Methyltetrazine is a click chemistry reagent containing an methyltetrazine group. Methyltetrazine-activated Cy3 probe reacts with TCO-containing compounds via an Inverse-Electron-Demand Diels-Alder reaction to form a stable covalent bond and does not require Cu-catalyst or elevated temperatures .

HY-172761

AX-53802		Alkynes
AX-53802 is a ferroptosis inducer targeting GPX4 with an IC₅₀ of 0.34 µM. AX-53802 forms a covalent bond with GPX4, initiating membrane translocation directly upon binding. AX-53802 and FAK/Src inhibitors promotes cell death. AX-53802 can be used for cancer study .

HY-151833

Methyltetrazine-amido-N-bis(PEG4-acid)		Tetrazine
Methyltetrazine-amido-N-bis(PEG4-acid) is a click chemistry reagent containing an azide group. Methyltetrazine-amido-N-bis(PEG4-acid) is a PEG derivative that contains a methyltetrazine group and two acid groups. This reagent can react with TCO-containing compounds to form a stable covalent bond without the catalysis of Cu or elevated temperatures. The inverse-electron demand Diels-Alder cycloaddition reaction of TCO with tetrazines is the fastest bioorthogonal reaction with exceptional selectivity. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. PEG linker increases the water solubility of the compound. Reagent grade, for research use only . Methyltetrazine-amido-N-bis(PEG4-acid) 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.

Cat. No.	Nombre del producto		Classification

HY-112624B

Dextran T70 (MW 70,000) Dextran 70; Dextran D70; Dextran T70(MW 64000-76000)		Polymers
Dextran 70,000 is a high molecular weight polysaccharide formed by glucose linked by α-(1→6) glycosidic bonds. Dextran 70,000 can expand blood volume through colloidal osmotic pressure effect and inhibit cell adhesion and platelet aggregation through steric hindrance. At the same time, Dextran 70,000 can be used as a drug carrier to achieve targeted delivery through endocytosis. Dextran 70,000 is biologically inert and has low immunogenicity. It can be used for clinical blood volume expansion, anti-thrombotic research, and evaluation of vascular permeability in in vitro experiments. It can also be combined with fluorescent dyes for cell tracking and drug delivery research. 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-W591476

m-PEG1000-thiol mPEG1000-SH		Polymers
m-PEG1000-thiol is a surface modifier that can modify DNA thiolation and is used in the synthesis of gold nanorods (AuNR). m-PEG1000-thiol can load thiolated DNA onto AuNR, form a covalent bond with the surface of gold nanoparticles through the thiol group, and stabilize the nanoparticles by the steric hindrance effect of the polyethylene glycol chain, preventing aggregation and enhancing its biocompatibility. m-PEG1000-thiol can also provide a platform for the subsequent coupling of biomolecules (such as DNA, antibodies) by replacing surfactants (such as CTAB) on the surface of nanoparticles, thereby exerting its activity in promoting the functionalization of nanomaterials [2].

HY-W440719

Cholesterol-PEG2000-MAL		Pegylated Lipids
Cholesterol-PEG2000-MAL is a PEG derivative and can be used to prepare liposome or nanoparticle due to its ability to self-assemble in water. The maleimide moiety is reactive with thiol molecule to form a covalent thioether bond.

HY-W440833

DSPE-PEG3400-azide		Pegylated Lipids
DSPE-PEG3400-azide is a polydisperse PEG covalently attached to a phospholipid. The polymer is an amphiphilic molecule with hydrophobic fatty acid chains and hydrophilic PEG head which enables lipid bilayer or micelles formation in water. The phospholipid PEG can be used to prepare liposome or nanoparticles for targeted drug delivery and is reactive with alkyne to form triazole bond.

HY-W1048669B

Biotin-PEG10000-DMG		Pegylated Lipids
Biotin-PEG10000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W440831

DSPE-PEG1000-azide		Pegylated Lipids
DSPE-PEG1000-azide is a phospholipid with covalently attached polydisperse PEG. This polymer is commonly used for the preparation of long circulating liposomes. The azide moiety is reactive with alkyne to form a stable triazole bond.

HY-W1048669A

Biotin-PEG5000-DMG		Pegylated Lipids
Biotin-PEG5000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W1048669I

Biotin-PEG3400-DMG		Pegylated Lipids
Biotin-PEG3400-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W1048669H

Biotin-PEG2000-DMG		Pegylated Lipids
Biotin-PEG2000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

HY-W1048669E

Biotin-PEG1000-DMG		Pegylated Lipids
Biotin-PEG1000-DMG is a compound composed of biotin, PEG, and myristoyl-sn-glycerol, used for drug delivery. Biotin forms a stable non-covalent bond with streptavidin.

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MCE Japan Authorized Agent ナミキ商事株式会社コスモ・バイオ株式会社重松貿易株式会社
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