Search Result

Results for "

modification sites

" in MedChemExpress (MCE) Product Catalog:

By Targets:	ADC Linker (1) Amino Acid Derivatives (3) Amyloid-β (1) Antibiotic (1) Bacterial (2) Biochemical Assay Reagents (7) Complement System (1) DNA Methyltransferase (1) DNA/RNA Synthesis (4) EGFR (1) Endogenous Metabolite (3) Fluorescent Dye (1) Fungal (1) mRNA (1) Nucleoside Antimetabolite/Analog (2) PD-1/PD-L1 (1) Phosphoramidites (3) PKA (1) Reference Standards (2) SARS-CoV (1) UGT (1)
By Research Areas:	Cancer (6) Infection (5) Inflammation/Immunology (3) Metabolic Disease (3) Neurological Disease (1)
Click Chemistry:	Labeling and Fluorescence Imaging (1) Azide (3)
Oligonucleotides:	Antigens (1) Nucleotide Analogs (1) Nucleoside Analogs (1) Adenine (1) Cytosine (1) mRNA (1) Uracil (1) Phosphoramidites (4) Guanine (1) Cytidine (1)

Inhibitors & Agonists

Screening Libraries

Fluorescent Dye

Biochemical Assay Reagents

Peptides

Natural
Products

Click Chemistry

Oligonucleotides

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-145746

Sulfo-Cy5 azide	Fluorescent Dye PD-1/PD-L1	Inflammation/Immunology Cancer
Sulfo-Cy5 azide is a near-infrared fluorescent probe with favorable click chemistry reactivity. Sulfo-Cy5 azide enables fluorescence imaging, tissue and cellular visualization of PD-L1 in tumors, and site-specific modification of anti-PD-L1 antibodies. Sulfo-Cy5 azide has been employed for RNA labeling and imaging. Sulfo-Cy5 azide can be conjugated to targeting agents for fluorescence imaging in atherosclerosis and breast cancer models (Ex/Em = 645/670 nm) .

HY-153083

COVID-19 Spike Protein mRNA(N1-Me-Pseudo UTP) 1 Publications Verification	mRNA SARS-CoV	Infection
COVID-19 Spike Protein mRNA (N1-Me-Pseudo UTP) is an mRNA encoding the SARS-CoV-2 spike protein with enhanced performance via chemical modification. COVID-19 Spike Protein mRNA (N1-Me-Pseudo UTP) replaces natural uridine (UTP) with N1-Me-Pseudo UTP, which effectively reduces immunogenicity and improves stability and translation efficiency. The 3' UTR of COVID-19 Spike Protein mRNA (N1-Me-Pseudo UTP) optimizes AU-rich elements through HuR anchor sites, exhibiting higher translation efficiency. COVID-19 Spike Protein mRNA is widely used in COVID-19-related scientific research and vaccine development .

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-113138

3-Methyluridine 1 Publications Verification N3-Methyluridine	Endogenous Metabolite	Metabolic Disease
3-Methyluridine (m ³U; N3-Methyluridine) is a methylated nucleotide present in ribosomal RNA (rRNA), mainly targeting specific base sites of RNA molecules such as 23S rRNA. 3-Methyluridine can introduce a methyl group at the N3 position of uracil, affecting the secondary structure stability and base pairing ability of RNA, and regulating ribosome function. For example, it affects ribosomal subunit binding and tRNA interaction. 3-Methyluridine is often used as a key raw material for the synthesis of modified nucleotides, and is used to construct RNA oligonucleotides containing methylation modifications to study the effects of RNA methylation on gene expression and drug resistance .

HY-P5506

C5a Receptor agonist, W5Cha	Complement System	Others
C5a Receptor agonist, W5Cha (Peptide 1) is a selective complement C5a receptor (C5aR) agonist (EC₅₀=0.2 μM), a hexapeptide derived from the C-terminus of C5a with specific amino acid modifications. C5a Receptor agonist, W5Cha is able to interact with the Arg-206 site of the C5a receptor through its C-terminal arginine, thereby activating the receptor .

HY-136276

DMNB-caged-Serine	Amino Acid Derivatives	Others
DMNB-caged-Serine is a photocaged amino acid. DMNB-caged-Serine can be used as a catalytic residue, hydrogen bonding partner or site of post-translational modification. DMNB-caged-Serine can be used for the control of protein phosphorylation .

HY-W006886

Fmoc-(R)-2-(7-octenyl)Ala-OH	Amino Acid Derivatives	Others
Fmoc-(R)-2-(7-octenyl) Ala-OH is an unnatural Fmoc-protected amino acid and modification module. Fmoc-(R)-2-(7-octenyl) Ala-OH serves as a key building block for all-hydrocarbon cross-linking modification of antimicrobial peptides, and facilitates the generation of stapled peptide derivatives. When introduced into specific sites of the parent peptide, Fmoc-(R)-2-(7-octenyl) Ala-OH effectively increases the α-helix content of the peptide chain, thereby significantly enhancing its antimicrobial activity and proteolytic stability. Fmoc-(R)-2-(7-octenyl) Ala-OH is widely used in research on bacterial infections and the development of related antimicrobial agents . Stapled peptide is a specially chemically modified polypeptide. It locks the peptide chain into a stable α-helical structure by introducing a "staple"-like chemical bridge (usually an all-carbon backbone) at specific positions of the peptide chain.

HY-164583

DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite	Phosphoramidites DNA/RNA Synthesis	Others
DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite is an RNA phosphoramidite monomer. DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite allows site-specific introduction of a 2'-O-C22 lipophilic modification at adenosine positions to construct double-stranded RNA (dsRNA) molecules with extrahepatic delivery capability. DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite supports target gene silencing in skeletal muscle, cardiac muscle and adipose tissue by enhancing the lipophilicity and tissue uptake efficiency of dsRNA. DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite can be used for the construction and mechanism research of nucleic acid silencing molecules .

HY-119390

AA-CW236	DNA Methyltransferase	Cancer
AA-CW236 is a MGMT (O6-methylguanine DNA methyltransferase) inhibitor. AA-CW236 targets MGMT active site Cys145 for covalent modification .

HY-W570886

2'-O-MOE-U	DNA/RNA Synthesis	Cancer
2'-O-MOE-U is a nucleic acid modification group (Phosphoramidite) with 3'-exonuclease inhibitory activity. 2'-O-MOE-U also exhibits gene silencing activity and double-stranded oligonucleotide stability. By forming steric interactions with 3'-exonuclease residues, 2'-O-MOE-U anchors the 3'-end of the siRNA guide strand in the hAgo2 PAZ domain, thereby regulating double-stranded thermal stability and enhancing base-pairing specificity. 2'-O-MOE-U does not induce IFNα production, can be incorporated at multiple sites of siRNA to enhance RNAi activity, and produces a synergistic effect with 2'-F modification. 2'-O-MOE-U has been widely used in studies related to breast cancer and other diseases .

HY-164582

DMTr-2'-O-C22-rC(Ac)-3'-CE-Phosphoramidite	Phosphoramidites DNA/RNA Synthesis	Others
DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite is an RNA phosphoramidite monomer. DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite enables site-specific introduction of 2'-O-C22 lipophilic modification at cytidine positions during oligonucleotide synthesis, which is used to construct double-stranded RNA (dsRNA) molecules with extrahepatic delivery capability. DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite supports target gene silencing in skeletal muscle, cardiac muscle and adipose tissue by enhancing the lipophilicity and tissue uptake efficiency of dsRNA. Construction and mechanism study of DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite nucleic acid silencing molecules .

HY-130046

16-Epiestriol 16-epi-Estriol; 16β,17β-Estriol	UGT Bacterial	Infection Inflammation/Immunology
16-Epiestriol (16-epi-Estriol; 16β,17β-Estriol) is a natural stereoisomer of estriol and an anti-inflammatory agent that targets UGT. The Ki values of 16-Epiestriol against human UGT1A10 and UGT2B7 are 98.1 μM and 162 μM, respectively. As a glucuronidation substrate, 16-Epiestriol can be modified at the 3-OH, 16-OH and 17-OH sites by various UGT enzymes; in liver microsomes, the modification mainly occurs at the 16-OH and 17-OH sites, while reactions take place at all three sites in intestinal microsomes. 16-Epiestriol acts on the phase II inflammatory process by blocking edema mediated by prostaglandins and leukocyte infiltration. It lacks glycogenic activity or any effect on blood glucose levels, and serves as an important candidate molecule in the research of inflammatory diseases .

HY-164581

DMTr-2'-O-C22-rG(ibu)-3'-CE-Phosphoramidite	Phosphoramidites DNA/RNA Synthesis	Others
DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite is an RNA phosphoramidite monomer for oligonucleotide synthesis. DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite enables site-specific introduction of 2'-O-C22 lipophilic modification at guanosine positions to construct double-stranded RNA (dsRNA) molecules with extrahepatic delivery capability. DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite supports target gene silencing in skeletal muscle, cardiac muscle and adipose tissue by enhancing the lipid solubility and tissue uptake efficiency of dsRNA. DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite can be used for the construction and mechanism research of nucleic acid silencing molecules .

HY-157006A

TCO-PEG3-NH2	Biochemical Assay Reagents	Others
TCO-PEG3-NH2 is a click chemistry reagent, it contains a TCO group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing Tetrazine groups. The amino group of TCO-PEG3-NH2 can react with compounds containing carboxyl, ester, or other reactive groups to form stable amide bonds, enabling site-specific conjugation or modification of biomolecules.

HY-W1048851C

4-Arm-PEG20000-Maleimide 4-Arm-PEG20000-Mal	Biochemical Assay Reagents	Others
4-Arm-PEG20000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery .

HY-W671129

Frenolicin B	Antibiotic Fungal	Infection
Frenolicin B is a covalent enzyme inhibitor and an orally active antiparasitic agent, with an IC₅₀ of 0.2 μM against human Prx1. Frenolicin B selectively inhibits Glutaredoxin 3 via covalent modification of the active-site cysteines Cys159/Cys261. Frenolicin B selectively inhibits Peroxiredoxin 1 via covalent modification of the active-site cysteines Cys83/Cys173. Frenolicin B can be used in research related to colon cancer, breast cancer, lung cancer and malaria .

HY-177787A

2'-Deoxy-N-methyl-AMP ammonium	Nucleoside Antimetabolite/Analog	Others
2'-Deoxy-N-methyl-AMP ammonium is an N6-substituted adenine nucleotide derivative and a glycosyl donor. On one hand, 2'-Deoxy-N-methyl-AMP ammonium acts as a specific substrate for N6-methyl-AMP aminohydrolase, and it is catalytically converted to dIMP to participate in the nucleotide metabolic cycle. On the other hand, 2'-Deoxy-N-methyl-AMP ammonium also serves as a guanosine diphosphate (GDP)-linked fucose derivative donor, driving site-specific glycoconjugation of proteins under the mediation of α-1,3-fucosyltransferase. 2'-Deoxy-N-methyl-AMP ammonium is an important molecular tool for investigating the mechanisms of nucleotide modification and protein glycosylation .

HY-D2911

Pantetheine probe PP-3	Biochemical Assay Reagents	Metabolic Disease
Pantetheine probe PP-3 (Compound PP-3) is an alkynyl group connector probe. Pantetheine probe PP-3 selectively enriches and maps modification sites (e.g., Ser231 on DHRS2). Pantetheine probe PP-3 is promising for research of metabolic disorders (e.g., fatty acid synthesis dysregulation) .

HY-134389

6-Phe-cAMP N6-Phenyladenosine-3',5'-cyclic monophosphate	PKA	Cancer
6-Phe-cAMP is a site-selective and highly membrane-permeant activator of protein kinase A (PKA), with a strong preference for site A of both isozymes. 6-Phe-cAMP can undergo phosphorothioate modification .

HY-W1048851A

4-Arm-PEG5000-Maleimide 4-Arm-PEG5000-Mal	Biochemical Assay Reagents	Others
4-Arm-PEG5000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery .

HY-W1048851D

4-Arm-PEG40000-Maleimide 4-Arm-PEG40000-Mal	Biochemical Assay Reagents	Others
4-Arm-PEG40000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery .

HY-157140

HibK	Biochemical Assay Reagents	Others
HibK is is a new type of histone mark that is widely distributed in histone proteins. HibK as a useful tool can be used for probing post-translational modification by site-specifically incorporate HibK into proteins .

HY-Z15868

5-Hydroxycytidine	Nucleoside Antimetabolite/Analog	Infection
5-Hydroxycytidine is the RNA modified nucleoside that can be found in the 23S rRNA of bacteria E. coli. 5-Hydroxycytidine modifies at the C2501 site, exhibits a higher modification level in stationary cells. 5-Hydroxycytidine exhibits a higher modification level in radiation resistant Radius than in E. coli .

HY-137028

2′-Thioadenosine PD157432	EGFR	Cancer
2'-Thioadenosine (PD157432) is a selective and irreversible inhibitor of ErbB-1 and ErbB-2, with an IC₅₀ of 45 µM for ErbB-2. 2'-Thioadenosine covalently inactivates ErbB-1 via modification of a cysteine residue at the active site .

HY-131455A

Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA	Biochemical Assay Reagents	Others
Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA is used for detection of modification site for N-myristoylated and GPI-anchored proteins in blood-stage P. falciparum . Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 (TFA) 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-186091

AcdK	Amino Acid Derivatives	Others
AcdK is a non-natural amino acid and a precursor of allysine. AcdK allows site-specific incorporation into target proteins in E. coli via the amber suppression strategy. AcdK enables site-specific lysine dimethylation or monomethylation modification of target proteins. AcdK can synthesize site-specific lysine-methylated variants of histone H3 and p53, which is applicable for investigating the substrate specificity and catalytic function of epigenetic enzymes .

HY-130046R

16-Epiestriol (Standard) 16-epi-Estriol (Standard); 16β,17β-Estriol (Standard)	Endogenous Metabolite Reference Standards Bacterial	Infection Inflammation/Immunology
16-Epiestriol (Standard) is the analytical standard of 16-Epiestriol (HY-130046). This product is intended for research and analytical applications. 16-Epiestriol (16-epi-Estriol; 16β,17β-Estriol) is a natural stereoisomer of estriol and an anti-inflammatory agent that targets UGT. The Ki values of 16-Epiestriol against human UGT1A10 and UGT2B7 are 98.1 μM and 162 μM, respectively. As a glucuronidation substrate, 16-Epiestriol can be modified at the 3-OH, 16-OH and 17-OH sites by various UGT enzymes; in liver microsomes, the modification mainly occurs at the 16-OH and 17-OH sites, while reactions take place at all three sites in intestinal microsomes. 16-Epiestriol acts on the phase II inflammatory process by blocking edema mediated by prostaglandins and leukocyte infiltration. It lacks glycogenic activity or any effect on blood glucose levels, and serves as an important candidate molecule in the research of inflammatory diseases .

HY-180467

Neu5Ac-2Galβ1-3Glc-oxazoline-(2)Me	ADC Linker	Cancer
Neu5Ac-2Galβ1-3Glc-oxazoline-(2)Me (Compound G12) is a disaccharide linker. Neu5Ac-2Galβ1-3Glc-oxazoline-(2)Me can be efficiently recognized by the endo-glycosidase Endo-S2 and can be directedly transferred to the conserved N-glycosylation site (Asn297 position) of the antibody's Fc domain through enzymatic catalytic reactions, thereby achieving site-specific modification of the antibody. Neu5Ac-2Galβ1-3Glc-oxazoline-(2)Me can be used for for the synthesis of antibody-conjugated drugs (ADCs) .

HY-113138R

3-Methyluridine (Standard) N3-Methyluridine (Standard)	Endogenous Metabolite Reference Standards	Metabolic Disease
3-Methyluridine (Standard) is the analytical standard of 3-Methyluridine. This product is intended for research and analytical applications. 3-Methyluridine (m3U; N3-Methyluridine) is a methylated nucleotide present in ribosomal RNA (rRNA), mainly targeting specific base sites of RNA molecules such as 23S rRNA. 3-Methyluridine can introduce a methyl group at the N3 position of uracil, affecting the secondary structure stability and base pairing ability of RNA, and regulating ribosome function. For example, it affects ribosomal subunit binding and tRNA interaction. 3-Methyluridine is often used as a key raw material for the synthesis of modified nucleotides, and is used to construct RNA oligonucleotides containing methylation modifications to study the effects of RNA methylation on gene expression and drug resistance .

Cat. No.	Product Name

HY-L942

Allosteric Modulator Fragment Library	1802 compounds
In contrast to the high conservation of conventional orthosteric sites, allosteric sites possess structural characteristics of low conservation, high hydrophobicity, weak polarity, confined spatial geometry, and dynamic cryptic properties. There is a significant difference between their core structures and orthosteric pockets — allosteric pockets are mostly dynamic grooves formed by protein conformational changes, subunit interface clefts, or shallow depressions, rather than the rigid "keyhole" structure of orthosteric sites. With looser spatial constraints, allosteric sites have the advantages of high selectivity and low off-target risk, and have become an important direction in new drug discovery. Based on the dynamic, hydrophobic, and narrow-long spatial characteristics of allosteric pockets, MCE has performed targeted modification and screening of fragments. The screening criteria strictly conform to the requirements of allosteric binding: molecular weight is controlled at 120–280 Da (to meet the core needs of small molecules in fragment libraries and high derivatization), hydrogen bond donors (HBD ≤ 2), hydrogen bond acceptors (HBA ≤ 3), polar surface area (PSA = 30–80 Å²), rotatable bonds (≤ 2), moderate hydrophobicity (cLogP = 1–3.5), no strongly ionizable groups, and both appropriate rigidity and conformational flexibility to adapt to the dynamic changes of the pocket. Meanwhile, combined with the results of principal moment of inertia (PMI) analysis, fragments with high 3D diversity were obtained. Such fragments have good shape complementarity with allosteric pockets, ensuring that the fragments can smoothly enter the allosteric pockets and form stable binding, while providing room for subsequent optimization and derivation. This library contains 1,800 structurally diverse fragment molecules with excellent drug-like properties, suitable for allosteric drug development and the design and optimization of allosteric sites. It combines the

Allosteric Modulator Fragment Library

1802 compounds

In contrast to the high conservation of conventional orthosteric sites, allosteric sites possess structural characteristics of low conservation, high hydrophobicity, weak polarity, confined spatial geometry, and dynamic cryptic properties. There is a significant difference between their core structures and orthosteric pockets — allosteric pockets are mostly dynamic grooves formed by protein conformational changes, subunit interface clefts, or shallow depressions, rather than the rigid "keyhole" structure of orthosteric sites. With looser spatial constraints, allosteric sites have the advantages of high selectivity and low off-target risk, and have become an important direction in new drug discovery.

Based on the dynamic, hydrophobic, and narrow-long spatial characteristics of allosteric pockets, MCE has performed targeted modification and screening of fragments. The screening criteria strictly conform to the requirements of allosteric binding: molecular weight is controlled at 120–280 Da (to meet the core needs of small molecules in fragment libraries and high derivatization), hydrogen bond donors (HBD ≤ 2), hydrogen bond acceptors (HBA ≤ 3), polar surface area (PSA = 30–80 Å²), rotatable bonds (≤ 2), moderate hydrophobicity (cLogP = 1–3.5), no strongly ionizable groups, and both appropriate rigidity and conformational flexibility to adapt to the dynamic changes of the pocket. Meanwhile, combined with the results of principal moment of inertia (PMI) analysis, fragments with high 3D diversity were obtained. Such fragments have good shape complementarity with allosteric pockets, ensuring that the fragments can smoothly enter the allosteric pockets and form stable binding, while providing room for subsequent optimization and derivation.

This library contains 1,800 structurally diverse fragment molecules with excellent drug-like properties, suitable for allosteric drug development and the design and optimization of allosteric sites. It combines the

HY-L169

Anti-Drug-Resistant Compound Library	630 compounds
Resistance refers to the decrease in the effectiveness of drugs in treating diseases or symptoms. Due to the increasing global antibiotic resistance, it may threaten our ability to treat common infectious diseases. Drug resistance is also the main cause of chemotherapy failure in malignant tumors. In approximately 50% of cases, drug resistance exists even before chemotherapy begins. There are many mechanisms of anticancer drug resistance, including increased protein expression that leads to drug removal, mutations in drug binding sites, recovery of tumor protein production, and pre-existing genetic heterogeneity in tumor cell populations. In addition, the issue of drug resistance seems to have affected the development of new anticancer drugs. Drug resistance may be caused by various conditions, such as mutations, epigenetic modifications, and upregulation of drug efflux protein expression. Overcoming multidrug resistance in cancer treatment is becoming increasingly important. MCE designs a unique collection of 630 anti-drug-resistant compounds. It is a good tool to be used for research on cancer and other diseases.

Anti-Drug-Resistant Compound Library

630 compounds

Resistance refers to the decrease in the effectiveness of drugs in treating diseases or symptoms. Due to the increasing global antibiotic resistance, it may threaten our ability to treat common infectious diseases. Drug resistance is also the main cause of chemotherapy failure in malignant tumors. In approximately 50% of cases, drug resistance exists even before chemotherapy begins. There are many mechanisms of anticancer drug resistance, including increased protein expression that leads to drug removal, mutations in drug binding sites, recovery of tumor protein production, and pre-existing genetic heterogeneity in tumor cell populations. In addition, the issue of drug resistance seems to have affected the development of new anticancer drugs. Drug resistance may be caused by various conditions, such as mutations, epigenetic modifications, and upregulation of drug efflux protein expression. Overcoming multidrug resistance in cancer treatment is becoming increasingly important.

MCE designs a unique collection of 630 anti-drug-resistant compounds. It is a good tool to be used for research on cancer and other diseases.

Cat. No.	Product Name	Type

HY-145746

Sulfo-Cy5 azide	Fluorescent Dye
Sulfo-Cy5 azide is a near-infrared fluorescent probe with favorable click chemistry reactivity. Sulfo-Cy5 azide enables fluorescence imaging, tissue and cellular visualization of PD-L1 in tumors, and site-specific modification of anti-PD-L1 antibodies. Sulfo-Cy5 azide has been employed for RNA labeling and imaging. Sulfo-Cy5 azide can be conjugated to targeting agents for fluorescence imaging in atherosclerosis and breast cancer models (Ex/Em = 645/670 nm) .

Sulfo-Cy5 azide

Fluorescent Dye

Sulfo-Cy5 azide is a near-infrared fluorescent probe with favorable click chemistry reactivity. Sulfo-Cy5 azide enables fluorescence imaging, tissue and cellular visualization of PD-L1 in tumors, and site-specific modification of anti-PD-L1 antibodies. Sulfo-Cy5 azide has been employed for RNA labeling and imaging. Sulfo-Cy5 azide can be conjugated to targeting agents for fluorescence imaging in atherosclerosis and breast cancer models (Ex/Em = 645/670 nm) .

HY-D2911

Pantetheine probe PP-3	Fluorescent Dye
Pantetheine probe PP-3 (Compound PP-3) is an alkynyl group connector probe. Pantetheine probe PP-3 selectively enriches and maps modification sites (e.g., Ser231 on DHRS2). Pantetheine probe PP-3 is promising for research of metabolic disorders (e.g., fatty acid synthesis dysregulation) .

Cat. No.	Product Name	Type

HY-W1048851C

4-Arm-PEG20000-Maleimide 4-Arm-PEG20000-Mal	Biochemical Assay Reagents
4-Arm-PEG20000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery .

HY-W1048851A

4-Arm-PEG5000-Maleimide 4-Arm-PEG5000-Mal	Biochemical Assay Reagents
4-Arm-PEG5000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery .

HY-W1048851D

4-Arm-PEG40000-Maleimide 4-Arm-PEG40000-Mal	Biochemical Assay Reagents
4-Arm-PEG40000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery .

HY-131455A

Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA	Biochemical Assay Reagents
Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA is used for detection of modification site for N-myristoylated and GPI-anchored proteins in blood-stage P. falciparum . Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 (TFA) 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.

Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA

Biochemical Assay Reagents

Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA is used for detection of modification site for N-myristoylated and GPI-anchored proteins in blood-stage P. falciparum . Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 (TFA) 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-P5506

C5a Receptor agonist, W5Cha	Complement System	Others
C5a Receptor agonist, W5Cha (Peptide 1) is a selective complement C5a receptor (C5aR) agonist (EC₅₀=0.2 μM), a hexapeptide derived from the C-terminus of C5a with specific amino acid modifications. C5a Receptor agonist, W5Cha is able to interact with the Arg-206 site of the C5a receptor through its C-terminal arginine, thereby activating the receptor .

HY-W006886

Fmoc-(R)-2-(7-octenyl)Ala-OH	Amino Acid Derivatives	Others
Fmoc-(R)-2-(7-octenyl) Ala-OH is an unnatural Fmoc-protected amino acid and modification module. Fmoc-(R)-2-(7-octenyl) Ala-OH serves as a key building block for all-hydrocarbon cross-linking modification of antimicrobial peptides, and facilitates the generation of stapled peptide derivatives. When introduced into specific sites of the parent peptide, Fmoc-(R)-2-(7-octenyl) Ala-OH effectively increases the α-helix content of the peptide chain, thereby significantly enhancing its antimicrobial activity and proteolytic stability. Fmoc-(R)-2-(7-octenyl) Ala-OH is widely used in research on bacterial infections and the development of related antimicrobial agents . Stapled peptide is a specially chemically modified polypeptide. It locks the peptide chain into a stable α-helical structure by introducing a "staple"-like chemical bridge (usually an all-carbon backbone) at specific positions of the peptide chain.

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-113138

3-Methyluridine 1 Publications Verification N3-Methyluridine	Natural Products Classification of Application Fields Other Diseases Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
3-Methyluridine (m ³U; N3-Methyluridine) is a methylated nucleotide present in ribosomal RNA (rRNA), mainly targeting specific base sites of RNA molecules such as 23S rRNA. 3-Methyluridine can introduce a methyl group at the N3 position of uracil, affecting the secondary structure stability and base pairing ability of RNA, and regulating ribosome function. For example, it affects ribosomal subunit binding and tRNA interaction. 3-Methyluridine is often used as a key raw material for the synthesis of modified nucleotides, and is used to construct RNA oligonucleotides containing methylation modifications to study the effects of RNA methylation on gene expression and drug resistance .

HY-W671129

Frenolicin B	Structural Classification Microorganisms Antibiotics Other Antibiotics Source Classification	Antibiotic Fungal
Frenolicin B is a covalent enzyme inhibitor and an orally active antiparasitic agent, with an IC₅₀ of 0.2 μM against human Prx1. Frenolicin B selectively inhibits Glutaredoxin 3 via covalent modification of the active-site cysteines Cys159/Cys261. Frenolicin B selectively inhibits Peroxiredoxin 1 via covalent modification of the active-site cysteines Cys83/Cys173. Frenolicin B can be used in research related to colon cancer, breast cancer, lung cancer and malaria .

HY-113138R

3-Methyluridine (Standard) N3-Methyluridine (Standard)	Structural Classification Natural Products Endogenous metabolite Source Classification	Endogenous Metabolite Reference Standards
3-Methyluridine (Standard) is the analytical standard of 3-Methyluridine. This product is intended for research and analytical applications. 3-Methyluridine (m3U; N3-Methyluridine) is a methylated nucleotide present in ribosomal RNA (rRNA), mainly targeting specific base sites of RNA molecules such as 23S rRNA. 3-Methyluridine can introduce a methyl group at the N3 position of uracil, affecting the secondary structure stability and base pairing ability of RNA, and regulating ribosome function. For example, it affects ribosomal subunit binding and tRNA interaction. 3-Methyluridine is often used as a key raw material for the synthesis of modified nucleotides, and is used to construct RNA oligonucleotides containing methylation modifications to study the effects of RNA methylation on gene expression and drug resistance .

Cat. No.	Product Name		Classification

HY-145746

Sulfo-Cy5 azide		Azide Labeling and Fluorescence Imaging
Sulfo-Cy5 azide is a near-infrared fluorescent probe with favorable click chemistry reactivity. Sulfo-Cy5 azide enables fluorescence imaging, tissue and cellular visualization of PD-L1 in tumors, and site-specific modification of anti-PD-L1 antibodies. Sulfo-Cy5 azide has been employed for RNA labeling and imaging. Sulfo-Cy5 azide can be conjugated to targeting agents for fluorescence imaging in atherosclerosis and breast cancer models (Ex/Em = 645/670 nm) .

HY-131455A

Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA		Azide
Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 TFA is used for detection of modification site for N-myristoylated and GPI-anchored proteins in blood-stage P. falciparum . Biotin-C1-PEG3-C3-amido-C5-Gly-Arg-Gly-N3 (TFA) 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-186091

AcdK		Azide
AcdK is a non-natural amino acid and a precursor of allysine. AcdK allows site-specific incorporation into target proteins in E. coli via the amber suppression strategy. AcdK enables site-specific lysine dimethylation or monomethylation modification of target proteins. AcdK can synthesize site-specific lysine-methylated variants of histone H3 and p53, which is applicable for investigating the substrate specificity and catalytic function of epigenetic enzymes .

Cat. No.	Product Name		Classification

HY-153083

COVID-19 Spike Protein mRNA(N1-Me-Pseudo UTP) 1 Publications Verification		mRNA Antigens
COVID-19 Spike Protein mRNA (N1-Me-Pseudo UTP) is an mRNA encoding the SARS-CoV-2 spike protein with enhanced performance via chemical modification. COVID-19 Spike Protein mRNA (N1-Me-Pseudo UTP) replaces natural uridine (UTP) with N1-Me-Pseudo UTP, which effectively reduces immunogenicity and improves stability and translation efficiency. The 3' UTR of COVID-19 Spike Protein mRNA (N1-Me-Pseudo UTP) optimizes AU-rich elements through HuR anchor sites, exhibiting higher translation efficiency. COVID-19 Spike Protein mRNA is widely used in COVID-19-related scientific research and vaccine development .

HY-164583

DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite		Phosphoramidites Adenine
DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite is an RNA phosphoramidite monomer. DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite allows site-specific introduction of a 2'-O-C22 lipophilic modification at adenosine positions to construct double-stranded RNA (dsRNA) molecules with extrahepatic delivery capability. DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite supports target gene silencing in skeletal muscle, cardiac muscle and adipose tissue by enhancing the lipophilicity and tissue uptake efficiency of dsRNA. DMTr-2'-O-C22-rA-3'-CE-Phosphoramidite can be used for the construction and mechanism research of nucleic acid silencing molecules .

HY-W570886

2'-O-MOE-U		Phosphoramidites Uracil
2'-O-MOE-U is a nucleic acid modification group (Phosphoramidite) with 3'-exonuclease inhibitory activity. 2'-O-MOE-U also exhibits gene silencing activity and double-stranded oligonucleotide stability. By forming steric interactions with 3'-exonuclease residues, 2'-O-MOE-U anchors the 3'-end of the siRNA guide strand in the hAgo2 PAZ domain, thereby regulating double-stranded thermal stability and enhancing base-pairing specificity. 2'-O-MOE-U does not induce IFNα production, can be incorporated at multiple sites of siRNA to enhance RNAi activity, and produces a synergistic effect with 2'-F modification. 2'-O-MOE-U has been widely used in studies related to breast cancer and other diseases .

HY-164582

DMTr-2'-O-C22-rC(Ac)-3'-CE-Phosphoramidite		Phosphoramidites Cytosine
DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite is an RNA phosphoramidite monomer. DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite enables site-specific introduction of 2'-O-C22 lipophilic modification at cytidine positions during oligonucleotide synthesis, which is used to construct double-stranded RNA (dsRNA) molecules with extrahepatic delivery capability. DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite supports target gene silencing in skeletal muscle, cardiac muscle and adipose tissue by enhancing the lipophilicity and tissue uptake efficiency of dsRNA. Construction and mechanism study of DMTr-2'-O-C22-rC (Ac)-3'-CE-Phosphoramidite nucleic acid silencing molecules .

HY-164581

DMTr-2'-O-C22-rG(ibu)-3'-CE-Phosphoramidite		Phosphoramidites Guanine
DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite is an RNA phosphoramidite monomer for oligonucleotide synthesis. DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite enables site-specific introduction of 2'-O-C22 lipophilic modification at guanosine positions to construct double-stranded RNA (dsRNA) molecules with extrahepatic delivery capability. DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite supports target gene silencing in skeletal muscle, cardiac muscle and adipose tissue by enhancing the lipid solubility and tissue uptake efficiency of dsRNA. DMTr-2'-O-C22-rG (ibu)-3'-CE-Phosphoramidite can be used for the construction and mechanism research of nucleic acid silencing molecules .

HY-177787A

2'-Deoxy-N-methyl-AMP ammonium		Nucleotide Analogs
2'-Deoxy-N-methyl-AMP ammonium is an N6-substituted adenine nucleotide derivative and a glycosyl donor. On one hand, 2'-Deoxy-N-methyl-AMP ammonium acts as a specific substrate for N6-methyl-AMP aminohydrolase, and it is catalytically converted to dIMP to participate in the nucleotide metabolic cycle. On the other hand, 2'-Deoxy-N-methyl-AMP ammonium also serves as a guanosine diphosphate (GDP)-linked fucose derivative donor, driving site-specific glycoconjugation of proteins under the mediation of α-1,3-fucosyltransferase. 2'-Deoxy-N-methyl-AMP ammonium is an important molecular tool for investigating the mechanisms of nucleotide modification and protein glycosylation .

HY-Z15868

5-Hydroxycytidine		Nucleoside Analogs Cytidine
5-Hydroxycytidine is the RNA modified nucleoside that can be found in the 23S rRNA of bacteria E. coli. 5-Hydroxycytidine modifies at the C2501 site, exhibits a higher modification level in stationary cells. 5-Hydroxycytidine exhibits a higher modification level in radiation resistant Radius than in E. coli .

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