733 Results for "

blocking agents

" in MedChemExpress (MCE) Product Catalog:
Products (733)

733 Results for "blocking agents" in MCE Product Catalog:

Cat. No.: HY-160906A
Synonyms: GSSSG TFA
Glutathione trisulfide TFA (GSSSG TFA) is an orally active, blood-brain barrier permeable neuroprotective agent. Glutathione trisulfide TFA inactivates intracellular tyrosinase, regulates the expression of Cars2, Cbs, MITF and TYR, inhibits α-MSH (HY-P0252)-induced melanogenesis, and restores intracellular persulfide levels reduced by α-MSH. Glutathione trisulfide TFA scavenges free radicals, quenches ROS, reduces Paclitaxel (HY-B0015)-induced superoxide production, upregulates the expression of antioxidant protein genes, and inhibits oxidative stress-induced cell death. Glutathione trisulfide TFA promotes ERK1/2 activation, prevents NF-κB p65 activation, inhibits TAK1 phosphorylation, reduces pro-inflammatory cytokine expression, and blocks microglial activation. Glutathione trisulfide TFA can be used in research related to dry age-related macular degeneration, inflammation-associated eye diseases, Alzheimer's disease, Parkinson's disease, etc.
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Cat. No.: HY-169412
CAS No.: 2848599-79-9
MAPK-IN-3 (Compound 4a) is an anti-proliferative agent that shows particularly strong inhibitory effects on KYSE 30, HCT 116, and HGC 27, with IC50 values of 0.57 μM, 3.27 μM, and 2.28 μM, respectively. MAPK-IN-3 blocks the cell cycle via a p53-dependent mechanism and induces cell apoptosis through a p53-independent mechanism. MAPK-IN-3 downregulates the expression of cell cycle-related proteins like Cyclin D1 and cyclin B1, upregulates pro-apoptotic proteins such as cleaved PARP, cleaved caspase-7, and cleaved caspase-9, and reduces the expression of anti-apoptotic proteins like Bcl-2. Additionally, MAPK-IN-3 increases the intracellular level of ROS in KYSE 30 cells and upregulates the expression of members of the MAPK signaling pathway associated with ROS, such as p-ERK, p-p38 and p-JNK .
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Cat. No.: HY-N1353R
CAS No.: 569-92-6
Rhamnocitrin (Standard) is the analytical standard of Rhamnocitrin. This product is intended for research and analytical applications. Rhamnocitrin is an anti-inflammatory and antioxidant agent that targets STIM-1, NFATc3 and MAPK pathways and can scavenge DPPH (IC50=28.38 mM). Rhamnocitrin selectively inhibits oxidative stress and inflammatory responses in vascular endothelial cells and neurons. Rhamnocitrin up-regulates miR-185 to inhibit STIM-1-mediated store-operated calcium entry (SOCE), thereby blocking NFATc3 nuclear translocation and downstream inflammatory factor expression, while inducing heme oxygenase HO-1 expression and regulating the ERK/p38 MAPK pathway, inhibiting antioxidant and pro-inflammatory cytokines (such as IL-6, IL-8) and adhesion molecules (such as ICAM-1, VCAM-1). Rhamnocitrin can be used in the study of endothelial-related inflammatory diseases (such as sepsis, acute lung injury, atherosclerosis) and neuroprotection (such as oxidative damage of PC12 cells) .
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Cat. No.: HY-L154
3,728 compounds

Covalent inhibitors are small molecules that can bind specifically to target proteins through covalent bonds and inhibit their biological functions. Although for a long time, covalent targeting has been playing a subordinate role in drug discovery, with an increasing number of reports on successful clinical applications of such drugs, the potential of these agents is now being acknowledged. Currently, cysteine is the most common covalent amino acid residue in a variety of covalent drugs, and various warheads have been developed that can react with cysteine, providing the key building blocks for covalent drugs to form covalent bonds.

To meet the development needs of covalent inhibitors targeting cysteine, MCE has designed a unique collection of 3,728 fragments with different covalent warheads that target cysteine. The MCE Cysteine Targeted Covalent Fragment Library is designed using the following covalent warheads: Acrylamides, Propiolic acid ester, Dimethylamine functionalized acrylamides, Chloroacetamides, Acrylonitrile, 2-Cyanoacrylamide, Aziridine, Haloacetamide, etc. All fragments are pre-filtered with the Rule of Three restrictions which can be used for fragment-based covalent drug development.

Cat. No.: HY-103019R
CAS No.: 1610408-97-3
Synonyms: (+)-BAY-1251152 (Standard); (+)-VIP152 (Standard); (S)-Enitociclib (Standard)
Enitociclib (Standard) is the analytical standard of Enitociclib (HY-103019). This product is intended for research and analytical applications. Enitociclib ((+)-BAY-1251152; (+)-VIP152) is a selective CDK9 inhibitor (IC50=3 nM) that inhibits transcriptional elongation by blocking Ser2/Ser5 phosphorylation of RNA polymerase II. Enitociclib specifically depletes key short-lived proteins such as c-MYC, MCL-1 and induces tumor cell apoptosis. Enitociclib also interferes with the production of enhancer RNAs (eRNA) and enhancer-promoter interactions, and downregulates oncogene expression at the epigenetic level. Enitociclib exerts synergistic effects with agents including Bortezomib (HY-10227), Lenalidomide (HY-A0003), Pomalidomide (HY-10984), Venetoclax (HY-15531) and Paclitaxel (HY-B0015), and even reverses paclitaxel resistance. Enitociclib serves as a vital research tool for various malignancies such as double-hit diffuse large B-cell lymphoma, multiple myeloma and pancreatic ductal adenocarcinoma .
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Cat. No.: HY-108652R
CAS No.: 1343364-54-4
Research Areas:  

Inflammation/Immunology

α,β-Methylene-ATP trisodium (Standard) is the analytical standard of α,β-Methylene-ATP (trisodium) (HY-108652). This product is intended for research and analytical applications. α,β-Methylene-ATP trisodium is an agonist of P2X1 and P2X3 receptors and can cross the blood-brain barrier. α,β-Methylene-ATP trisodium can trigger a reflex pressor response by activating P2X receptors in peripheral muscles and the central locus coeruleus (LC); this effect can be blocked by the P2X antagonist PPADS (HY-108960). α,β-Methylene-ATP trisodium also activates noradrenergic neurons in the central locus coeruleus, mediating antinociceptive effects; this effect can be attenuated by the locus coeruleus damaging agent DSP-4 (HY-103210/HY-121602). α,β-Methylene-ATP trisodium can be used to study the pathological mechanisms of neuropathic pain, cardiovascular reflex regulation, and antinociceptive effects of the central nervous system .
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Cat. No.: HY-130046R
CAS No.: 547-81-9
Synonyms: 16-epi-Estriol (Standard); 16β,17β-Estriol (Standard)
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 .
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Cat. No.: HY-173148
CAS No.: 2892688-18-3
Target:  

SARS-CoV

Research Areas:  

Infection

TKB272 is an orally active and selective antiviral agent targeting the main protease (Mpro) of SARS-CoV-2. It effectively blocks the infection and replication of various SARS-CoV-2 strains, including Omicron variants such as XBB.1.5 and EG.5.1. The enzymatic inhibitory activity of TKB272 shows an IC50 of 0.7 µM (against SARS-CoV-2WK-521 Mpro), and its antiviral activity at the cellular level reaches an EC50 as low as 2.6 nM (against BQ.1.1 strain in HeLahACE2-TMPRSS2 cells), with a cytotoxicity CC50 of 98 µM, indicating no apparent toxicity. In addition, TKB272 significantly suppresses the replication of SARS-CoV-2XBB.1.5 in B6.Cg-Tg(K18-hACE2)2-Prlmn/J transgenic mouse models. TKB272 holds promise for research in the field of SARS-CoV-2 infection .
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Cat. No.: HY-N20682
CAS No.: 2866266-56-8
1-Hydroxy-4αH-1,10-secoeudesma-5(6),10(14),11(13)-trien-12,8β-olide is a neuroprotective agent. 1-Hydroxy-4αH-1,10-secoeudesma-5(6),10(14),11(13)-trien-12,8β-olide reduces the protein expression levels of iNOS and COX-2, blocks the DNA-binding activity of NF-κB, and inhibits nitric oxide production. 1-Hydroxy-4αH-1,10-secoeudesma-5(6),10(14),11(13)-trien-12,8β-olide promotes the polarization of microglia to the M2 phenotype by inducing the production of Arg-1, and alleviates cell damage induced by H2O2 and 6-Hydroxydopamine (HY-B1081) .
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Cat. No.: HY-12292G
CAS No.: 1129669-05-1
IM-12 GMP is IM-12 (HY-12292) produced by using GMP guidelines. GMP small molecules works appropriately as an auxiliary reagent for cell therapy manufacture. IM-12 is an orally active anti-inflammatory agent that targets and inhibits the NF-κB and STAT3 signaling pathways. IM-12 activates the Wnt signaling pathway and promotes the nuclear translocation of β-catenin by inhibiting GSK3β, while also blocking the tyrosine kinase activity of p210BCR/ABL. IM-12 reduces the levels of IL-6, IL-17, NO, prostaglandin E2, iNOS and COX-2, and induces ER stress, Ca 2+ release, autophagy and apoptosis. IM-12 is heat-sensitive and does not induce autophagy in IM-resistant p210BCR/ABL T315I mutant cells. IM-12 is also a component of the 5iLA medium used for naive pluripotent stem cell research. IM-12 has been applied in studies related to carrageenan (HY-125474)-induced hind paw edema, TNBS-induced colitis, and acute and chronic myeloid leukemia .
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Cat. No.: HY-12888
CAS No.: 907543-25-3
Target:  

Topoisomerase Bacterial

Research Areas:  

Infection

AZD5099 is an orally effective pyrrole amide inhibitor and antibacterial agent. AZD5099 shows over 10000-fold higher selectivity for bacterial type II topoisomerases than for human topoisomerase IIα, with a IC50 value of 0.032 μmol/L against Staphylococcus aureus GyrB, a IC50 of 0.760 μmol/L against Escherichia coli GyrB, a IC50 of 73 nM against Escherichia coli ParE, a Kd of 83.8 nmol/L for Staphylococcus aureus GyrB, and a IC50 of >50 μM against human topoisomerase IIα. AZD5099 inhibits rat Mrp2 ATPase activity, competitively binds to the ATP-binding site of bacterial type II topoisomerases, blocks enzyme activity, reduces bacterial DNA and RNA synthesis, disrupts DNA replication and transcription processes, and induces mitochondrial toxicity. AZD5099 exhibits activity against Gram-positive bacteria, fastidious Gram-negative bacteria and drug-resistant strains, reduces bacterial loads in mouse infection models, and has a low spontaneous resistance frequency. AZD5099 can be used in studies related to infections caused by Gram-positive bacteria and fastidious Gram-negative bacteria, methicillin-resistant Staphylococcus aureus infections, Streptococcus pneumoniae pulmonary infections, as well as Staphylococcus aureus and Escherichia coli infections .
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Cat. No.: HY-170524
CAS No.: 3052313-73-9
Research Areas:  

Infection

TDI-015051 is a highly selective, orally active antiviral agent that targets the coronavirus NSP14 guanine-N7 methyltransferase. TDI-015051 binds to substrates in a non-competitive manner and forms a stable ternary complex, precisely blocking the capping and methylation processes of viral mRNA. TDI-015051 potently inhibits a variety of coronaviruses (including SARS-CoV-2 and MERS). By impairing viral replication and translation and inducing a moderate type I interferon-mediated immune response, it significantly reduces pulmonary viral load and exhibits a synergistic effect with Nirmatrelvir (HY-138687). In addition, TDI-015051 does not inhibit non-coronavirus methyltransferases, and the drug-resistant mutations it induces impair viral fitness, demonstrating excellent antiviral properties and safety. TDI-015051 can be used for research on COVID-19 and the replication mechanism of coronaviruses .The IC50 values of TDI-015051 against SARS-CoV-2, α-hCoV-NL63, α-hCoV-229E, β-hCoV-MERS are 0.15 nM, 1.7 nM, 2.6 nM and 3.6 nM, respectively, and the Ka value against SARS-CoV-2 is 0.061 nM .
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Cat. No.: HY-N16980
CAS No.: 2292113-33-6
(7'E,8S)-2',4,8-Trihydroxy-3-methoxy-2,4'-epoxy-8,5'-neolign-7'-en-7-one (compound 4) is a novel neolignan anti-inflammatory agent. (7'E,8S)-2',4,8-Trihydroxy-3-methoxy-2,4'-epoxy-8,5'-neolign-7'-en-7-one has an IC50 of 25.2 μM against TGF-β-induced hepatic stellate cells (HSC-T6). (7'E,8S)-2',4,8-Trihydroxy-3-methoxy-2,4'-epoxy-8,5'-neolign-7'-en-7-one may be related to blocking excessive cell proliferation in the process of liver fibrosis and can be used in the study of liver fibrosis-related diseases. (7'E,8S)-2',4,8-Trihydroxy-3-methoxy-2,4'-epoxy-8,5'-neolign-7'-en-7-one can be naturally extracted from the dried aerial parts of Penthorum chinense Pursh .
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