BMS-378806

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BMS-378806
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Cat #: V1839 CAS #: 357263-13-9 Purity ≥ 98%

Description: BMS-378806 (also known as BMS 806) is a novel, potent, orally bioavailable small molecule that selectively inhibits the binding of HIV-1 gp120 to the CD4 receptor with EC50 of 0.85-26.5 nM in HIV virus. BMS-378806 inhibits the first step of HIV-1 infection by blocking the binding of host cell CD4 with viral gp120 protein. It binds the exterior envelope glycoprotein gp120, which can block the conformational change that occurs with CD4 binding and preventing fusion of the viral and target cell membranes.

References: [1]. Wang T, et al. Discovery of 4-benzoyl-1-[(4-methoxy-1H- pyrrolo[2,3-b]pyridin-3-yl)oxoacetyl]-2- (R)-methylpiperazine (BMS-378806): a novel HIV-1 attachment inhibitor that interferes with CD4-gp120 interactions. J Med Chem. 2003 Sep 25;46(20):4236-9.

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Molecular Weight (MW)406.43
Molecular FormulaC22H22N4O4
CAS No.357263-13-9
Storage-20℃ for 3 years in powder formr
-80℃ for 2 years in solvent
Solubility In VitroDMSO: 81 mg/mL (199.3 mM)r
Water:<1 mg/mLr
Ethanol: 3 mg/mL (7.4 mM)
Solubility In Vivo30% PEG400+0.5% Tween80+5% Propylene glycol: 30 mg/mL
SMILES CodeC[C@@H]1CN(CCN1C(=O)C(=O)c2c[nH]c3c2c(ccn3)OC)C(=O)c4ccccc4
SynonymsBMS-806; BMS806; BMS 806; BMS-378806; BMS 378806; BMS378806;
ProtocolIn VitroIn vitro activity: BMS-806, a 7-azaindole derivative, binds gp120 and interferes with the interaction of HIV surface protein gp120 with the host cell receptor CD4. BMS-806 inhibits a panel of macrophage- and T cell-tropic HIV-1 strains, which are laboratory strains that use either CCR5 (M-tropic) or CXR4 (T-tropic) co-receptors to enter cells and are classified as B subtypes. The aqueous solubility from the crystalline form of BMS-806 (BMS 378806) is 170 μg/mL. The solubility of BMS-806 is 1.3 mg/mL at pH=2.1 and 3.3 mg/mL at pH=11, a solubility profile that reveals the amphoteric nature of BMS-806 and estimates the pKa of the protonated form as 2.9 while that of the free base is approximately 9.6. BMS-806 competes with soluble CD4 binding to a monomeric form of gp120 in an ELISA assay with IC50 = ~ 100 nM. BMS-806 is specific towards HIV-1, with no significant inhibitory activity against HIV-2, SIV, MuLV, RSV, HCMV, BVDV, VSV, and influenza virus observed at concentrations ranging from 10 to 30 μM and no overt cytotoxicity toward host cells, CC50 values > 225 μM. BMS-806 binds directly to gp120 at a stoichiometry of approximately 1:1, with a binding affinity similar to that of soluble CD4. The potential BMS-806 target site is localized to a specific region within the CD4 binding pocket of gp120 by using HIV-1 gp120 variants carrying either compound-selected resistant substitutions or gp120-CD4 contact site mutations. Kinase Assay: In general, host cells are infected with HIV-1 at a multiplicity of infection (MOI) of 0.005 50% tissue culture infective doses (TCID50)/cell followed by incubation in the presence of serially diluted inhibitors for 4 to 7 days. Virus yields are quantitated using an RT assay or a p24 enzyme-linked immunosorbent assay (ELISA) (NEN). The results from at least three experiments are used to calculate the 50% effective concentrations (EC50s). The EC50s of IDV, SQV, RTV, and NFV are compared to that of BMS-806 using Dunnett's test. These comparisons are made separately within each assay system. Dunnett's test is used to reduce the probability of false-positive results when a number of treatments are being compared to a control. Confidence bounds for the fold increases in EC50s observes when the same drug is tested in two different assay systems are computed using Fieller's theorem. The use of this theorem is necessary because ratios of parameters (in this case, EC50s) are known not to follow a standard probability distribution, such as the normal distribution. Numbers within the confidence interval are not significantly different from the observed fold increase at the 95% level. Cell Assay: To determine cytotoxicity, MT-2 cells are incubated in the presence of serially diluted BMS-806 for 6 days and cell viability is quantitated using an XTT [2,3-bis(2-methoxy-4-nitro-5-sulfophenyl-2H-tetrazolium-5-carboxanilide] assay to calculate the 50% cytotoxic concentrations (CC50s).
In VivoWhen BMS-806 is administered dose-proportional increases in the AUC and Cmax is observed. In rat, dog and monkey, plasma levels of drug exceeded the concentrations required to half-maximally inhibit virus replication in vitro. The volume of distribution of BMS-806 ranges from 0.4 to 0.6 L/kg, indicative of partitioning beyond plasma; however, examination of brain levels in the rat revealed minimal CNS penetration. BMS-806 is stable in human, rat, dog and monkey blood at 37 °C during a 2-h incubation. The blood-to-plasma concentration ratios in humans, rats, dogs and monkeys are 1.1, 0.77, 1.2 and 0.92 (n=3), respectively, suggesting that BMS-806 is distributed to approximately the same extent between plasma and blood cells. The human clearance of BMS-806 predicted from microsomes is 9.2 ml/min/kg (46% of the hepatic blood flow).
Animal modelRat, dog and monkey
These protocols are for reference only. InvivoChem does not independently validate these methods.
Preparing Stock Solutions
Solvent volume to be added Mass (the weight of a compound)
Mother liquor concentration 1mg5mg10mg20mg
1mM2.4604 mL12.3022 mL24.6045 mL49.2090 mL
5mM0.4921 mL2.4604 mL4.9209 mL9.8418 mL
10mM0.2460 mL1.2302 mL2.4604 mL4.9209 mL
20mM0.1230 mL0.6151 mL1.2302 mL2.4604 mL
Quality Control Documentation
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Step Two: Enter the in vivo formulation
%DMSO + % + %Tween 80 + %ddH2O

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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 add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH2O,mix and clarify.
Note:
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  • (2) Be sure to add the solvent(s) in order.