1. Metabolic Enzyme/Protease
    Anti-infection
  2. Cytochrome P450
    HIV
  3. Cobicistat

Cobicistat (Synonyms: GS-9350)

Cat. No.: HY-10493 Purity: 98.05%
Handling Instructions

Cobicistat is a potent and selective inhibitor of cytochrome P450 3A (CYP3A) enzymes with IC50s of 30-285 nM. Cobicistat is a pharmacokinetic enhancer which increases the overall absorption of several HIV medications.

For research use only. We do not sell to patients.

Cobicistat Chemical Structure

Cobicistat Chemical Structure

CAS No. : 1004316-88-4

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Solution
10 mM * 1 mL in DMSO USD 128 In-stock
Estimated Time of Arrival: December 31
Solid + Solvent
10 mM * 1 mL
ready for reconstitution
USD 128 In-stock
Estimated Time of Arrival: December 31
Solid
5 mg USD 100 In-stock
Estimated Time of Arrival: December 31
10 mg USD 150 In-stock
Estimated Time of Arrival: December 31
50 mg USD 450 In-stock
Estimated Time of Arrival: December 31
100 mg USD 650 In-stock
Estimated Time of Arrival: December 31
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Customer Review

Based on 9 publication(s) in Google Scholar

Top Publications Citing Use of Products
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Description

Cobicistat is a potent and selective inhibitor of cytochrome P450 3A (CYP3A) enzymes with IC50s of 30-285 nM. Cobicistat is a pharmacokinetic enhancer which increases the overall absorption of several HIV medications.

IC50 & Target

IC50: 30-285 nM (Cytochrome P450)[1]

In Vitro

In HIV-1 protease enzymatic assay and antiviral cellular assays. Cobicistat is inactive against HIV-1 protease (IC50>30 μM) . And Cobicistat has no inhibitory effect against HIV replication in a multicycle 5-day MT-2 HIV infection assay (EC50>30 μM). In assays using MT-2 cells, Cobicistat exhibits minimal cytotoxicity, with a CC50 value above 80 μM[1].
The mode of inhibition of human CYP3A by Cobicistat and Ritonavir shares the same mechanism of action for the inhibition of CYP3A. It shows its inhibitory effects on CYP3A may involve directly at the heme group of the CYP3A enzyme[1].
The minimal adverse effects of Cobicistat in these assays suggest a lower potential for toxicity related to altered lipid metabolism.
In the lipid accumulation assay with the human adipocytes, Ritonavir shows a clear effect with an EC50 of 16 μM. However, Cobicistat exhibits no effect at a concentration up to 30 μM[1].
In the glucose uptake assay with mouse adipocytes, Ritonavir shows a pronounced effect at the concentration of 10 μM. In contrast, the effects on glucose uptake by Cobicistat (10 μM) is significantly less[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial
Molecular Weight

776.02

Formula

C₄₀H₅₃N₇O₅S₂

CAS No.
Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (128.86 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 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
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.08 mg/mL (2.68 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.08 mg/mL (2.68 mM); Clear solution

  • 3.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 2.08 mg/mL (2.68 mM); Clear solution

*All of the co-solvents are provided by MCE.
References
Kinase Assay
[1]

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.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Assay
[1]

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%.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References

Purity: 99.77%

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Cobicistat
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HY-10493
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