Ensitrelvir fumarate

Modify Date: 2026-07-01 15:29:23

Ensitrelvir fumarate Structure
Ensitrelvir fumarate structure
Common Name Ensitrelvir fumarate
CAS Number 2757470-18-9 Molecular Weight 647.95
Density N/A Boiling Point N/A
Molecular Formula C26H21ClF3N9O6 Melting Point N/A
MSDS N/A Flash Point N/A

 Use of Ensitrelvir fumarate


Ensitrelvir (S-217622) fumarate is the first orally active non-covalent, non-peptidic, SARS-CoV-2 3CL protease inhibitor (IC50=13 nM)[1][2].

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name Ensitrelvir fumarate
Synonym More Synonyms

 Ensitrelvir fumarate Biological Activity

This table contains bioactivity, target information and biological‑assay experimental data of this compound.

Description Ensitrelvir (S-217622) fumarate is the first orally active non-covalent, non-peptidic, SARS-CoV-2 3CL protease inhibitor (IC50=13 nM)[1][2].
Related Catalog
In Vitro In a cytopathic effect (cpe)-inhibition assay of SARS-CoV-2 infected VeroE6/TMPRSS2 cells, Ensitrelvir fumarate shows the EC50 values are approximately 0.4 μM for both wild-type virus and Alpha, Beta, Gamma and Delta variants. EC50 values for SARS-CoV and MERS-CoV were 0.21 and 1.4 μM respectively[1].
In Vivo Ensitrelvir fumarate dose-dependently inhibits intrapulmonary replication of SARS-CoV-2 in mice[2].
References

[1]. McKimm-Breschkin JL, et al. COVID-19, Influenza and RSV: Surveillance-informed prevention and treatment - Meeting report from an isirv-WHO virtual conference. Antiviral Res. 2022;197:105227.

[2]. Yuto Unoh, et al. Discovery of S-217622, a Non-Covalent Oral SARS-CoV-2 3CL Protease Inhibitor Clinical Candidate for Treating COVID-19. bioRxiv 2022.01.26.477782.

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Molecular Formula C26H21ClF3N9O6
Molecular Weight 647.95
InChIKey FBOCUALVLIWPNQ-WLHGVMLRSA-N
SMILES Cn1cnc(Cn2c(=O)nc(Nc3cc4cn(C)nc4cc3Cl)n(Cc3cc(F)c(F)cc3F)c2=O)n1.O=C(O)C=CC(=O)O

 Ensitrelvir fumarateBioassay

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This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Oral bioavailability in Beagle dog at 3 micromol/2mL/kg measured for 0.25 to 24 hrs b...
Source: ChEMBL
Target: N/A
External Id: CHEMBL5163359
Name: Oral bioavailability in cynomolgus monkey at 3 micromol/2mL/kg measured for 0.25 to 2...
Source: ChEMBL
Target: N/A
External Id: CHEMBL5163358
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 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

S-217622

 Ensitrelvir fumarate | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the InChIKey of Ensitrelvir fumarate?
A: InChIKey of Ensitrelvir fumarate is FBOCUALVLIWPNQ-WLHGVMLRSA-N.
Q: What is the molecular formula of Ensitrelvir fumarate?
A: Molecular formula of Ensitrelvir fumarate is C26H21ClF3N9O6.
Q: What is the molecular weight of Ensitrelvir fumarate?
A: Molecular weight of Ensitrelvir fumarate is 647.95.
Q: What is the CAS number of Ensitrelvir fumarate?
A: CAS number of Ensitrelvir fumarate is 2757470-18-9.
Q: What is the English name of Ensitrelvir fumarate?
A: The English name of Ensitrelvir fumarate is Ensitrelvir fumarate.
Q: What English synonyms does Ensitrelvir fumarate have?
A: English synonyms of Ensitrelvir fumarate: S-217622.
Q: What are the uses of Ensitrelvir fumarate?
A: Main uses of Ensitrelvir fumarate: Ensitrelvir (S-217622) fumarate is the first orally active non-covalent, non-peptidic, SARS-CoV-2 3CL protease inhibitor (IC50=13 nM)[1][2].
Q: What is the SMILES notation of Ensitrelvir fumarate?
A: SMILES notation of Ensitrelvir fumarate is Cn1cnc(Cn2c(=O)nc(Nc3cc4cn(C)nc4cc3Cl)n(Cc3cc(F)c(F)cc3F)c2=O)n1.O=C(O)C=CC(=O)O.

 Ensitrelvir fumaratefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
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