CYP2 Inhibitor

Fenofibrate is a selective PPARα agonist with an EC₅₀ of 30 μM. Fenofibrate also inhibits human cytochrome P450 isoforms, with IC₅₀s of 0.2, 0.7, 9.7, 4.8 and 142.1 μM for CYP2C19, CYP2B6, CYP2C9, CYP2C8, and CYP3A4, respectively.

Apigenin (4',5,7-Trihydroxyflavone) is a competitive CYP2C9 inhibitor with a K_i of 2 μM.

1-Aminobenzotriazole is a nonspecific and irreversible inhibitor of cytochrome P450 (P450).

Stiripentol (STP) is an anticonvulsant agent, which can inhibit N-demethylation of CLB to NCLB mediatated by CYP3A4 (noncompetitively) and CYP2C19 (competitively) with K_i of 1.59±0.07 and 0.516±0.065 μM and IC₅₀ of 1.58 and 3.29 μM, respectively.

Gemfibrozil (Standard) is the analytical standard of Gemfibrozil. This product is intended for research and analytical applications. Gemfibrozil is an activator of PPAR-α, used as a lipid-lowering agent; Gemfibrozil is also a nonselective inhibitor of several P450 isoforms, with K_i values for CYP2C9, 2C19, 2C8, and 1A2 of 5.8, 24, 69, and 82 μM, respectively.

Fenofibrate (Standard) is the analytical standard of Fenofibrate. This product is intended for research and analytical applications. Fenofibrate is a selective PPARα agonist with an EC₅₀ of 30 μM. Fenofibrate also inhibits human cytochrome P450 isoforms, with IC₅₀s of 0.2, 0.7, 9.7, 4.8 and 142.1 μM for CYP2C19, CYP2B6, CYP2C9, CYP2C8, and CYP3A4, respectively.

Gemfibrozil 1-O-β-Glucuronide, a metabolite of Gemfibrozil (CI-719; HY-B0258), is a potent and competitive P450 (CYP) isoform CYP2C8 inhibitor with an IC₅₀ of 4.07 μM.

Cepharanthine is a natural product that can be isolated from the plant Stephania cephalantha Hayata. Cepharanthine has anti-severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2) activities. Cepharanthine has good effective in suppressing viral proliferation (half maximal (50%) inhibitory concentration (IC₅₀) and 90% inhibitory concentration (IC₉₀) values of 1.90 and 4.46 μM. Cepharanthine can also effectively reverses P-gp-mediated multidrug resistance in K562 cells and increase enhances the sensitivity of anticancer agents in xenograft mice model. Cepharanthine shows inhibitory effects of human liver cytochrome P450 enzymes CYP3A4, CYP2E1 and CYP2C9. Cepharanthine has antitumor, anti-inflammatory and antinociceptive effects.

Paroxetine (BRL29060) is an orally active and selective serotonin reuptake inhibitor (SSRI) and apoptosis inducer with blood-brain barrier permeability. Paroxetine inhibits nitric oxide synthase and CYP2D6, induces desensitization of 5-HT1A/1B/1D autoreceptors, downregulates 5-HT2 receptors, and promotes the production of inflammatory cytokines. Paroxetine is a weak norepinephrine (NE) uptake inhibitor and possesses antitumor activity. Paroxetine is widely used in research concerning depression, obsessive-compulsive disorder, panic disorder, social phobia, generalized anxiety disorder, post-traumatic stress disorder, premenstrual dysphoric disorder, hot flashes, and related conditions.

Rebastinib (DCC-2036) is an orally active, non-ATP-competitive Bcr-Abl inhibitor, with IC₅₀ values of 0.8 nM and 4 nM against Abl1^WT and Abl1^T315I, respectively. Rebastinib potently inhibits CYP2C8 (IC₅₀ = 0.0533 μM) and CYP2C9 (IC₅₀ = 2.54 μM). Rebastinib allosterically inhibits Tie2 with an IC₅₀ of 0.63 nM. Rebastinib inhibits the transcriptional activity of FoxO1. Rebastinib inhibits SRC family kinases, KDR and FLT3 kinases. Rebastinib induces Apoptosis. Rebastinib exerts anti-tumor activity in breast cancer. Rebastinib exerts anti-angiogenic effects. Rebastinib increases myotube diameter and improves reduced contractility. Rebastinib can be used in research related to triple-negative breast cancer, luminal breast cancer, pancreatic neuroendocrine tumors, muscle atrophy, cancer cachexia, chronic myeloid leukemia, and B-lymphocytic leukemia.

Salvianolic acid C is a noncompetitive Cytochrome P4502C8 (CYP2C8) inhibitor and a moderate mixed inhibitor of Cytochrome P45022J2 (CYP2J2), with K_is of 4.82 μM and 5.75 μM for CYP2C8 and CYP2J2, respectively.

Paroxetine (BRL29060) hydrochloride is an orally active and selective serotonin reuptake inhibitor (SSRI) and apoptosis inducer with blood-brain barrier permeability. Paroxetine hydrochloride inhibits nitric oxide synthase and CYP2D6, induces desensitization of 5-HT1A/1B/1D autoreceptors, downregulates 5-HT2 receptors, and promotes the production of inflammatory cytokines. Paroxetine hydrochloride is a weak norepinephrine (NE) uptake inhibitor and possesses antitumor activity. Paroxetine hydrochloride is widely used in research concerning depression, obsessive-compulsive disorder, panic disorder, social phobia, generalized anxiety disorder, post-traumatic stress disorder, premenstrual dysphoric disorder, hot flashes, and related conditions.

Fomepizole (4-Methylpyrazole) is a potent cytochrome P450 (CYP2E1) inhibitor. Fomepizole is a competitive inhibitor of the enzyme alcohol dehydrogenase. Fomepizole blocks further conversion of methanol and ethylene glycol to toxic metabolites. Fomepizole has the potential for an antidote for ethylene glycol or methanol poisoning.

Gentiopicroside, a naturally occurring iridoid glycoside, inhibits P450 activity, with an IC₅₀ and a K_i of 61 μM and 22.8 μM for CYP2A6; Gentiopicroside has anti-inflammatoryand antioxidative effects.

Sulfaphenazole is a selective inhibitor of human cytochrome P450 (CYP) 2C9 enzyme. Sulfaphenazole is a cytoprotective agent against light-induced death of photoreceptors. Sulfaphenazole inhibits light-induced necrosis and mitochondrial stress-initiated apoptosis. Sulfaphenazole is an off patent sulfonamide antibiotic and demonstrates bactericidal activity through enhanced M1 macrophage activity. Sulfaphenazole can significantly reduce infarct size and restore post-ischemic coronary flow following ischemia and reperfusion.

Gemfibrozil is an activator of PPAR-α, used as a lipid-lowering agent; Gemfibrozil is also a nonselective inhibitor of several P450 isoforms, with K_i values for CYP2C9, 2C19, 2C8, and 1A2 of 5.8, 24, 69, and 82 μM, respectively.

Clopidogrel hydrogen sulfate is an antiplatelet agent to prevent blood clots. Clopidogrel hydrogen sulfate inhibits CYP2B6 and CYP2C19 with IC₅₀s of 18.2 nM and 524 nM, respectively. Clopidogrel hydrogen sulfate is a potent antithrombotic agent that inhibits ADP-induced platelet aggregation．Clopidogrel hydrogen sulfate also is an orally active P2Y(12) inhibitor.

Bergamottin is a potent and competitive CYP1A1 inhibitor with a K_i of 10.703 nM.

Tetrahydrocurcumin is a Curcuminoid found in turmeric (Curcuma longa) that is produced by the reduction of Curcumin. Tetrahydrocurcumin inhibit CYP2C9 and CYP3A4.

Ticlopidine (PCR 5332), an antithrombotic proagent, acts as an allosteric, noncompetitive inhibitor of CD39 with the IC₅₀ of 81.7 μM. Ticlopidine blocks several NTPDase isoenzymes with IC₅₀s of 170 μM and 149 μM for NTPDase2 and NTPDase3, respectively. Ticlopidine is an inhibitor of CYP2C19 human liver cytochrome. Ticlopidine inhibits CYP2C9 and CYP3A4 with IC₅₀s of 26.0 and 32.3 μM, respectively.