Name: Fostemsavir
Brand: Selleck Chemicals
SKU: S7220
Rating: 5 (1 reviews)

Fostemsavir (BMS-663068, Rukobia), the phosphonooxymethyl prodrug of BMS626529, is an attachment inhibitor that targets HIV-1 gp120 and prevents its binding to CD4+ T cells with EC50 of < 10 nM.

Fostemsavir Chemical Structure

CAS: 864953-29-7

Purity & Quality Control

Batch: S722001 DMSO] 100 mg/mL] false] Water] Insoluble] false] Ethanol] Insoluble] false Purity: 99.65%

99.65

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Biological Activity

Description

Fostemsavir (BMS-663068, Rukobia), the phosphonooxymethyl prodrug of BMS626529, is an attachment inhibitor that targets HIV-1 gp120 and prevents its binding to CD4+ T cells with EC50 of < 10 nM.

Targets

HIV-1 gp120 ^[1]
(Cell-free assay)

10 nM(EC50)

In Vivo
In vivo	BMS-663068 is the phosphonooxymethyl prodrug of BMS-626529 designed to increase the solubility of the compound in the gut. BMS-663068 is cleaved by alkaline phosphatase, located on the luminal surface of the small intestine brush border membranes, releasing BMS-626529. Due to its good membrane permeability, BMS-626529 is then rapidly absorbed.^[1] BMS-663068 is an orally active inhibitor of HIV-1 attachment.^[2]
Animal Research	Animal Models	C57BL/7 mice, NSG-SGM3-derived HSC-Hu mice
	Dosages	20 mg/kg
	Administration	Oral gavage

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-01-11)
NCT04648280	Recruiting	HIV Infections With Multi Drug Resistant Virus	PENTA Foundation\|ViiV Healthcare\|PHPT Foundation\|Hospital Universitario 12 de Octubre\|Cromsource	June 30 2022	Phase 1\|Phase 2
NCT05220358	Recruiting	HIV-1-infection	Orlando Immunology Center\|ViiV Healthcare	May 1 2022	Phase 4
NCT02805556	Completed	Infection Human Immunodeficiency Virus	ViiV Healthcare\|GlaxoSmithKline	March 15 2016	Phase 1
NCT02508064	Completed	Infection Human Immunodeficiency Virus	ViiV Healthcare\|GlaxoSmithKline	August 3 2015	Phase 1
NCT02362503	Active not recruiting	HIV Infections	ViiV Healthcare	February 23 2015	Phase 3

References

Chemical Information & Solubility

Molecular Weight	583.49	Formula	C₂₅H₂₆N₇O₈P
CAS No.	864953-29-7	SDF	--
Smiles	COC1=CN=C([N]2C=NC(=N2)C)C3=C1C(=C[N]3CO[P](O)(O)=O)C(=O)C(=O)N4CCN(CC4)C(=O)C5=CC=CC=C5
Storage (From the date of receipt)	3 years-20°Cpowder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
Storage (From the date of receipt)	3 years-20°Cpowder		1 month-20°Cin solvent

In vitro
Batch:

DMSO : 100 mg/mL ( (171.38 mM)； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molecular Weight Calculator

In vivo
Batch:

Add solvents to the product individually and in order.

In vivo Formulation Calculator

Preparing Stock Solutions

Molarity Calculator

Dilution Calculator Molecular Weight Calculator

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

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.

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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