(-)-Cephaeline dihydrochloride is an enantiomer of Cephaeline dihydrochloride. Cephaeline dihydrochloride is a selective CYP2D6 inhibtor with IC50 of 121 μM.
Phortress free base (NSC 710305) is a P450 CYP1A1-activated antitumor prodrug with antitumor activity[1]. Phortress free base leads to DNA damage and cell cycle arrest[2].
ML252 is a selective inhibitor of potassium channel, targeting to KCNQ2 channel (Kv7.2) (IC50=69 nM). ML252 also inhibits Cytochrome P450 with IC50s of 6.1 nM (CYP1A2), 18.9 nM (CYP2C9), 3.9 nM (CYP3A4), 19.9 nM (CYP2D6), respectively[1][2].
Dihydrolanosterol-d7 is deuterium labeled Dihydrolanosterol. Dihydrolanosterol is a subtrate of CYP51 and a cholesterol biosynthesis inhibitor[1].
Bergapten-d3 is deuterium labeled Bergapten. Bergapten is a natural anti-inflammatory and anti-tumor agent. Bergapten is inhibitory towards mouse and human CYP isoforms.
D4-abiraterone is a major metabolite of abiraterone. D4-abiraterone is an inhibitor of CYP17A1, 3b-hydroxysteroid dehydrogenase (3βHSD) and steroid-5a-reductase (SRD5A) and also an antagonist of androgen receptor.
Kushenol K, a flavonoid antioxidant isolated from the roots of Sophora flavescens. Kushenol K is a cytochrome P-450 3A4 (CYP3A4) inhibitor with a Ki value of 1.35 μM[1]. Kushenol K shows weak antiviral activity against HSV-2 (EC50 of 147 μM)[2]. Kushenol K also inhibits the activity of SGLT1 and SGLT2[3].
Exemestane(FCE 24304) is an aromatase inhibitor, inhibits human placental and rat ovarian aromatase with IC50 of 30 nM and 40 nM, respectively.Target: AromataseApproved: October 2005Exemestane competitively inhibits and time-dependently inactivates of human placental aromatase with Ki of 4.3 nM. Exemestane displaces [3H]DHT from rat prostate androgen receptor with IC50 of 0.9 μM [1]. Exemestane (1 μM) increases alkaline phosphatase activity in hFOB and Saos-2 cells and induces the expression of MYBL2, OSTM1, HOXD11, ADCYAP1R1, and glypican 2 in hFOB cells [2]. Exemestane causes aromatase degradation in a dose-responsive manner in MCF-7aro cells [3].Exemestane increases lumbar spine BMD by 14.0% in OVX rats at dose of 100 mg/kg. Exemestane (100 mg/kg) and 17-hydroexemestane (20 mg/kg) significantly reduces an ovariectomy-induced increase in serum pyridinoline and serum osteocalcin in rats and causes significant reductions of serum cholesterol and low-density lipoprotein cholesterol inOVX rats [4].Exemestane (20 mg/kg/day s.c.) induces 26% complete (CR) and 18% partial (PR) tumor regressions in rats with 7,12-dimethylbenzanthracene (DMBA)-induced mammary tumors [5].
CYP3A4-IN-3 is a high-affinity specific inhibitor of cytochrome P450 3A4 (CYP3A4) with the IC50 value of 0.075 μM. CYP3A4-IN-3 is a ritonavir analogue, but with a simpler structure and twice the inhibitory effect of ritonavir. CYP3A4-IN-3 is used as an antiviral agent and immunosuppressant[1].
Seviteronel (VT-464) is a potent CYP17 lyase inhibitor(h-Lyase IC50=69 nM) that demonstrated both exceptional in vitro lyase/hydroxylase selectivity (~10-fold) and oral activity in a hamster model of androgen biosynthesis inhibition.
Ginsenoside F1, an enzymatically modified derivative of Ginsenoside Rg1, demonstrates competitive inhibition of CYP3A4 activity and weaker inhibition of CYP2D6 activity.
Ginsenoside C-K, a bacterial metabolite of G-Rb1, exhibits anti-inflammatory effects by reducing iNOS and COX-2. Ginsenoside C-K exhibits an inhibition against the activity of CYP2C9 and CYP2A6 in human liver microsomes with IC50s of 32.0±3.6 μM and 63.6±4.2 μM, respectively.
Antibacterial agent 102 (compound 32) possesses potent in vitro and in vivo antibacterial activity, with MICs < 0.5 μg/mL in Staphylococcus aureus (S. aureus). Antibacterial agent 102 also moderately inhibits CYP3A4 with an IC50 value of 6.148 μM. Antibacterial agent 102 can reduce Methicillin-resistant Staphylococcus aureus (MRSA) load in thigh infected mice[1].
Cytochrome P450 reductase is a NADPH-cytochrome reductase. Cytochrome P450 reductase has a role in promoting aromatase conformation optimal for substrate binding[1].
Ticlopidine (PCR 5332), an antithrombotic prodrug, 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[1]. Ticlopidine is an inhibitor of CYP2C19 human liver cytochrome. Ticlopidine inhibits CYP2C9 and CYP3A4 with IC50s of 26.0 and 32.3 μM, respectively[2][3].
Cecropin B has high level of antimicrobial activity and is considered as a valuable peptide antibiotic. Sequence: Lys-Trp-Lys-Val-Phe-Lys-Lys-Ile-Glu-Lys-Met-Gly-Arg-Asn-Ile-Arg-Asn-Gly-Ile-Val-Lys-Ala-Gly-Pro-Ala-Ile-Ala-Val-Leu-Gly-Glu-Ala-Lys-Ala-Leu-NH2.
Tetrahydrocurcumin D6 (HZIV 81-2 D6) is a deuterium labeled Tetrahydrocurcumin. Tetrahydrocurcumin is a Curcuminoid which displays inhibitory activity for CYP2C9 and CYP3A4[1].
Liarozole dihydrochloride (R75251; R85246) is a cytochrome P450 (CYP450) dependent inhibitor, orally active, it also a potent inhibitor of estrogen (via inhibition of aromatase) and testicular androgen synthesis (inhibition of 17 ,20-lyase). Liarozole dihydrochloride prevents the catabolism of retinoic acid via inhibition of 4-hydroxylase and exhibits retinoid sparing and retinoid-mimetic effects in vivo. Liarozole dihydrochloride is an imidazole derivative; it is being investigated as a non-hormonal agent in prostate cancer and in the treatment of various other cancers and skin disorders[1].
Quinidine hydrobromide is an antiarrhythmic agent. Quinidine is a potent, orally active, selective cytochrome P450db inhibitor. Quinidine hydrobromide is also a K+ channel blocker with an IC50 of 19.9 μM. Quinidine hydrobromide can be used for malaria research[1][2][3].
Cholesterol 24-hydroxylase-IN-2 is an inhibitor of cholesterol 24-hydroxylase (CH24H or CYP46A1), with the IC50 of 5.4 nM. Cholesterol 24-hydroxylase-IN-2 can be used in imaging of cholesterol 24-hydroxylase in mammals[1].
Obtusifoliol is a specific CYP51 inhibitor, Obtusifoliol shows the affinity with Kd values of 1.2 µM and 1.4 µM for Trypanosoma brucei (TB) and human CYP51, respectively[1].
FLT3-IN-17 inhibits CYPs and FLT3 mutants activity (IC50s: <0.5 nM for D835Y). FLT3-IN-17 is also a FAK inhibitor, with an IC50 value of 12 nM. FLT3 ligand-2 can be used in the research of cancers[1].
HET0016 is a potent and selective 20-hydroxyeicosatetraenoic acid (20-HETE) synthase inhibitor, with IC50 values of 17.7 nM, 12.1 nM and 20.6 nM for recombinant CYP4A1-, CYP4A2- and CYP4A3-catalyzed 20-HETE synthesis, respectively. HET0016 also is a selective CYP450 inhibitor, which has been shown to inhibit angiogenesis and tumor growth[1][2].
(Rac)-Brassinazole, triazole-type compound, is a brassinosteroid (BR) biosynthesis inhibitor. (Rac)-Brassinazole increases inhibition of CYP90B in BR biosynthesis[1][2]
(3S,5S)-Atorvastatin sodium salt is a pregnane X receptor (PXR) activator and the inactive enantiomer of Atorvastatin. Atorvastatin is an orally active HMG-CoA reductase inhibitor with lipid-lowering capabilities[1].
Dapaconazole, as an antifungal agent, inhibits sterol 14α-demethylase cytochrome P450 activity with an IC50 of 1.4 μM[1].
ONT-993 is an aliphatic hydroxylated metabolite. ONT-993 inhibits CYP2D6 (IC50=7.9 µM) and causes metabolism-dependent inactivation of CYP3A (KI=1.6 µM)[1].
Chlorzoxazone is a centrally acting muscle relaxant used to treat muscle spasm and the resulting pain or discomfort. It acts on the spinal cord by depressing reflexes.Chlorzoxazone is currently being used as a marker substrate in vitro/vivo studies to quantify cytochrome P450 2E1 (CYP2E1) activity in humans.
Fipronil is an insecticide that acts as a selective antagonist of insect GABA receptors (IC50s = 30 nM and 1,600 nM for cockroach and rat receptors, respectively). Fipronil also inhibits desensitizing and non-desensitizing glutamate-induced chloride currents in cockroach neurons (IC500s = 800 nM and 10 nM, respectively). Fipronil induces activity of the cytochrome P450 (CYP) isoforms CYP1A1/2, CYP2B1/2, and CYP3A1/2 in isolated rat liver microsomes.
ε-Viniferin, the dimer of Resveratrol and isolated from Vitis vinifera, displays a potent inhibitory for all the CYP activities, with Ki values from 0.5-20 μM. ε-Viniferin possesses potent antioxidant capacity[1][2].