Cobicistat (GS-9350) (Synonyms: GS-9350) |
| Katalog-Nr.GC14269 |
An inhibitor of CYP3A
Products are for research use only. Not for human use. We do not sell to patients.
Cas No.: 1004316-88-4
Sample solution is provided at 25 µL, 10mM.
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Cobicistat is a selective inhibitor of cytochrome P450 (CYP) 3A enzymes with IC50 values ranging from 0.03 to 0.285μM [1].
Cobicistat is a selective CYP3A inhibitor without intrinsic anti-HIV activity and is indicated in EU as a pharmacokinetic enhancer of the HIV-1 protease inhibitors atazanavir and darunavir in adults. Cobicistat is also developed to form a fixed-dose tablet in combination with elvitegravir, emtricitabine and TDF. Cobicistat inhibits CYP3A in vitro across a variety of substrates with IC50 values ranging from 0.03 to 0.285μM. Cobicistat is absorbed rapidly after oral administration in patients infected with HIV-1 with the Cmax of 1.2μg/ml. In the 48-week analysis of the phase III study, once-daily oral cobicistat is generally well tolerated. The tolerability of the cobicistat-boosted atazanavir remains similar longer term, with jaundice, ocular icterus and nausea in a 96-week analysis of the phase III study [1].
References:
[1] Deeks ED. Cobicistat: a review of its use as a pharmacokinetic enhancer of atazanavir and darunavir in patients with HIV-1 infection. Drugs. 2014 Feb;74(2):195-206.
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Kinase experiment: |
Inhibition of human cytochrome P450 activities is determined in duplicate in pooled human hepatic microsomal fractions following current scientific and regulatory guidelines. Reaction conditions are linear with respect to incubation time and hepatic microsomal protein concentration. Substrates are present at concentrations equal to or less than their respective Km values determined under the same reaction conditions. Metabolite and/or substrate concentrations are determined using specific, internal standard controlled HPLC MS/MS assays. For reactions monitoring metabolite formation there is less than 20% consumption of substrate during the reaction. Unless otherwise noted microsomal fraction, diluted in potassium phosphate buffer, is preincubated with substrate and inhibitor for 5 min at 37°C and the reaction initiated by the addition of an NADPH generating system followed by further incubation at 37°C with shaking. Enzyme-selective positive control inhibitors are tested in parallel. At appropriate times aliquots of the mixture are removed and the reaction terminated by addition to a mixture of methanol and acetonitrile containing the respective internal standard. After centrifugation aliquots of the supernatant are subjected to HPLC-MS/MS analysis. |
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Cell experiment: |
Five-fold serial dilutions of the tested compounds are prepared in triplicate in 96-well plates. MT-2 cells are added to plates at a density of 20,000/well in a final assay volume of 200 μL. After a 5-day incubation at 37°C, the cytotoxic effect is determined using a cell viability assay. One hundred μL media is removed from each well and replaced with 100 μL of phosphate-buffered saline containing 1.7 mg/mL XTT and 5 μg/mL PMS. Following 1-hour incubation at 37°C, 20 μL of 2% Triton X- 100 is added to each well and absorbance is read at 450 nm with a background subtraction at 650 nm. The data are plotted as cell viability vs. drug concentration. Cell viability is expressed as a percentage of the signal from untreated samples (0% cytotoxicity) after the subtraction of signal from samples treated with 10 μM of Podophyllotoxin (100% cytotoxicity). The CC50 value is calculated from the inhibition plots as the concentration of drug which inhibits cell proliferation by 50%. |
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References: [1]. Lianhong Xu, et al. Cobicistat (GS-9350): A Potent and Selective Inhibitor of Human CYP3A as a Novel Pharmacoenhancer. ACS Med. Chem. Lett., 2010, 1 (5), pp 209–213 |
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| Cas No. | 1004316-88-4 | SDF | |
| Überlieferungen | GS-9350 | ||
| Chemical Name | thiazol-5-ylmethyl (5-(2-(3-((2-isopropylthiazol-4-yl)methyl)-3-methylureido)-4-morpholinobutanamido)-1,6-diphenylhexan-2-yl)carbamate | ||
| Canonical SMILES | CC(C1=NC(CN(C(NC(C(NC(CC2=CC=CC=C2)CCC(NC(OCC3=CN=CS3)=O)CC4=CC=CC=C4)=O)CCN5CCOCC5)=O)C)=CS1)C | ||
| Formula | C40H53N7O5S2 | M.Wt | 776.02 |
| Löslichkeit | ≥ 150.9 mg/mL in DMSO, ≥ 102.4 mg/mL in EtOH with ultrasonic | Storage | Store at -20°C |
| General tips | Please select the appropriate solvent to prepare the stock solution according to the
solubility of the product in different solvents; once the solution is prepared, please store it in
separate packages to avoid product failure caused by repeated freezing and thawing.Storage method
and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored
at -20°C, please use it within 1 month. To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time. |
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| Shipping Condition | Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request. | ||
| Prepare stock solution | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.2886 mL | 6.4431 mL | 12.8863 mL |
| 5 mM | 0.2577 mL | 1.2886 mL | 2.5773 mL |
| 10 mM | 0.1289 mL | 0.6443 mL | 1.2886 mL |
Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
g
μL
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Calculation results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )
Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.
Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.
Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.
Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Average Rating: 5 (Based on Reviews and 30 reference(s) in Google Scholar.)
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