GC376 sodium

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MedKoo CAT#: 555227

CAS#: 1416992-39-6 (sodium)

Description: GC376 is a 3CLpro inhibitor (3C-like protease inhibitor). GC376 showed promise in treating cats with certain presentations of FIP and has opened the door to targeted antiviral drug therapy.

Price and Availability

Size Price Shipping out time Quantity
25mg USD 150 Same day
50mg USD 250 Same day
100mg USD 450 Same day
200mg USD 850 Same day
500mg USD 1950 Same day
1g USD 3150 Same day
2g USD 5650 Same day
Inquire bulk and customized quantity

Pricing updated 2020-08-15. Prices are subject to change without notice.

GC376 sodium, purity > 98%, is in stock. The same day shipping out after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 555227
Name: GC376 sodium
CAS#: 1416992-39-6 (sodium)
Chemical Formula: C21H30N3NaO8S
Exact Mass: 507.1651
Molecular Weight: 507.5338
Elemental Analysis: C, 49.70; H, 5.96; N, 8.28; Na, 4.53; O, 25.22; S, 6.32

Related CAS #: 1416992-39-6 (sodium)   1417031-79-8 (free acid)    

Synonym: GC376; GC-376; GC 376; GC376 sodium.

IUPAC/Chemical Name: sodium (2S)-2-((S)-2-(((benzyloxy)carbonyl)amino)-4-methylpentanamido)-1-hydroxy-3-(2-oxopyrrolidin-3-yl)propane-1-sulfonate


InChi Code: InChI=1S/C21H31N3O8S.Na/c1-13(2)10-16(24-21(28)32-12-14-6-4-3-5-7-14)19(26)23-17(20(27)33(29,30)31)11-15-8-9-22-18(15)25;/h3-7,13,15-17,20,27H,8-12H2,1-2H3,(H,22,25)(H,23,26)(H,24,28)(H,29,30,31);/q;+1/p-1/t15?,16-,17-,20?;/m0./s1

SMILES Code: O=S(C(O)[C@@H](NC([C@@H](NC(OCC1=CC=CC=C1)=O)CC(C)C)=O)CC2C(NCC2)=O)([O-])=O.[Na+]

Technical Data

Solid powder

>96% (or refer to the Certificate of Analysis)

Safety Data Sheet (SDS):

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO and water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


1: Pedersen NC, Kim Y, Liu H, Galasiti Kankanamalage AC, Eckstrand C, Groutas WC, Bannasch M, Meadows JM, Chang KO. Efficacy of a 3C-like protease inhibitor in treating various forms of acquired feline infectious peritonitis. J Feline Med Surg. 2018 Apr;20(4):378-392. doi: 10.1177/1098612X17729626. Epub 2017 Sep 13. PMID: 28901812; PMCID: PMC5871025.

2: Fumian TM, Tuipulotu DE, Netzler NE, Lun JH, Russo AG, Yan GJH, White PA. Potential Therapeutic Agents for Feline Calicivirus Infection. Viruses. 2018 Aug 16;10(8):433. doi: 10.3390/v10080433. PMID: 30115859; PMCID: PMC6116245.

3: Perera KD, Rathnayake AD, Liu H, Pedersen NC, Groutas WC, Chang KO, Kim Y. Characterization of amino acid substitutions in feline coronavirus 3C-like protease from a cat with feline infectious peritonitis treated with a protease inhibitor. Vet Microbiol. 2019 Oct;237:108398. doi: 10.1016/j.vetmic.2019.108398. Epub 2019 Aug 23. PMID: 31585653; PMCID: PMC6779346.

4: Takahashi D, Kim Y, Lovell S, Prakash O, Groutas WC, Chang KO. Structural and inhibitor studies of norovirus 3C-like proteases. Virus Res. 2013 Dec 26;178(2):437-44. doi: 10.1016/j.virusres.2013.09.008. Epub 2013 Sep 17. PMID: 24055466; PMCID: PMC3840063.

5: Kim Y, Lovell S, Tiew KC, Mandadapu SR, Alliston KR, Battaile KP, Groutas WC, Chang KO. Broad-spectrum antivirals against 3C or 3C-like proteases of picornaviruses, noroviruses, and coronaviruses. J Virol. 2012 Nov;86(21):11754-62. doi: 10.1128/JVI.01348-12. Epub 2012 Aug 22. PMID: 22915796; PMCID: PMC3486288.