GS-443902

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. GS-443902 is the active triphosphate metabolite of Remdesivir.

Product information

CAS Number: 1355149-45-9

Molecular Weight: 531.20

Formula: C12H16N5O13P3

Chemical Name: ({[({[(2R,3S,4R,5R)-5-{4-aminopyrrolo[2,1-f][1,2,4]triazin-7-yl}-5-cyano-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy](hydroxy)phosphoryl}oxy)phosphonic acid

Smiles: NC1=NC=NN2C1=CC=C2[C@]1(C#N)O[C@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O

InChiKey: DFVPCNAMNAPBCX-LTGWCKQJSA-N

InChi: InChI=1S/C12H16N5O13P3/c13-4-12(8-2-1-6-11(14)15-5-16-17(6)8)10(19)9(18)7(28-12)3-27-32(23,24)30-33(25,26)29-31(20,21)22/h1-2,5,7,9-10,18-19H,3H2,(H,23,24)(H,25,26)(H2,14,15,16)(H2,20,21,22)/t7-,9-,10-,12+/m1/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: H2O : 100 mg/mL (188.25 mM; Need ultrasonic).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

In a continuous 72 h incubation of 1 µM Remdesivir (GS-5734), the GS-443902 (GS-441524 triphosphate; Remdesivir metabolite; compound 4tp) level is measured at 2, 24, 48 and 72 h, and reaches a Cmax of 300, 110, and 90 pmol/million cells in macrophages, HMVEC, and HeLa cells lines respectively. GS-443902 (compound 8a) is a triphosphates (TP) derivative. GS-443902 (NTP; 0.01, 0.1, 1, 10, 100 μM) inhibits RSV RdRp-catalysed RNA synthesis by incorporating into the nascent viral RNA transcript and causing its premature termination. GS-5734 selectively inhibits EBOV replication by targeting its RdRp and inhibiting viral RNA synthesis following efficient intracellular conversion to GS-443902.

In Vivo:

Remdesivir (GS-5734; 10 mg kg; i.v.) rapidly distributes into peripheral blood mononuclear cells (PBMCs), and efficient conversion to GS-443902 (GS-441524 triphosphate; Remdesivir metabolite; NTP) is apparent within 2 h of dose administration in rhesus monkeys. In PBMCs, GS-443902 represents the predominant metabolite and is persistent with a t1/2 of 14 h and levels required for >50% virus inhibition for 24 hours.

Products are for research use only. Not for human use.