Remdesivir triphosphate – GS-443902 – CAS 1355149-45-9


Remdesivir triphosphate is synthesised by Santiago Lab (Prague, Czech Republic).

We are providing Remdesivir triphosphate in the form of Na+ salt or Et3N+ salt.

Purity (LC-MS)

99%+ | Certificate of Analysis

Package contents

Remdesivir triphosphate salt

This compound is for research use only. We do not sell to patients.
5 mg

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10 mg

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25 mg

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50 mg

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CAS: 1355149-45-9, 1355050-21-3 (Na+ salt)

IUPAC Name: 2-C-(4-Aminopyrrolo[2,1-f][1,2,4]triazin-7-yl)-2,5-anhydro-D-altrononitrile 6-triphosphate

Other names: GS-441524 triphosphate, Remdesivir metabolite, Remdesivir triphosphate metabolite

Molecular weight: 531.21 g/mol, 619.13 g/mol (Na+ salt), 935.48 g/mol (Et3N+ salt)

Molecular formula: C₁₂H₁₆N₅O₁₃P₃

Storage: -20 °C, protect from light, stored under argon

We are providing Remdesivir triphosphate in the form of Na+ salt or Et3N+ salt.


Remdesivir triphosphate is synthesised by Santiago Lab (Prague, Czech Republic). GS-443902 is the active triphosphate metabolite of Remdesivir with activity against zoonotic feline infectious peritonitis virus (FIPV) and severe acute respiratory syndrome (SARS) virus from Coronaviridae family. GS-443902 (GS-441524 triphosphate) is a potent viral RNA-dependent RNA-polymerases (RdRp) inhibitor with IC50s of 1.1 µM, 5 µM for RSV RdRp and HCV RdRp, respectively. 

Remdesivir, developed by Gilead Sciences, is an adenosine prodrug that metabolizes into its active form GS-441524 which interferes with the action of viral RNA-dependent RNA polymerase and evades proofreading by viral exoribonuclease (ExoN), causing a decrease in viral RNA production.

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5. Clarke, M. O. N. H.; Jordan, R.; Mackman, R. L.; Ray, A. S.; Siegel, D. Preparation of amino acid-containing nucleosides for treating flaviviridae virus infections. 2017-US28243, 2017184668, 20170419., 2017.
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