Description

Ensitrelvir is a potent and selective antiviral agent, specifically a 3C-like protease inhibitor. This compound is of significant commercial and research interest for its targeted mechanism of action against viral replication. It is primarily utilized by pharmaceutical R&D teams, contract research organizations (CROs), and manufacturers developing antiviral therapeutics. Ensitrelvir CAS NO 1471484-62-4 represents a key intermediate and active pharmaceutical ingredient (API) for advanced antiviral applications.

Application

• Pharmaceutical Active Ingredient (API): Serves as the core active component in the formulation of novel antiviral medications.
• Antiviral Drug Development: A critical reference standard and building block in the research and development pipeline for protease inhibitor-based therapies.
• Biochemical Research: Used as a precise tool compound in virology studies to investigate viral protease function and inhibition mechanisms.
• Preclinical and Clinical Studies: Employed in the synthesis of batches for pharmacokinetic, pharmacodynamic, and toxicology evaluations.
• Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for scale-up synthesis under cGMP conditions.
• Reference Standard: Provides a high-purity benchmark for quality control, analytical method development, and regulatory submissions.

Basic Information

Product Name	Ensitrelvir
CAS No.	1471484-62-4
Molecular Formula	C26H32F2N6O5S
Molecular Weight	578.63 g/mol
Synonyms	Ensitrelvir; S-217622; 1471484-62-4; (1R,2S,5S)-N-[(1S)-1-Cyano-2-[(3S)-2-oxopyrrolidin-3-yl]ethyl]-3-[(2S)-3,3-dimethyl-2-[(2,2,2-trifluoroacetyl)amino]butanoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide; 3C-like protease inhibitor S-217622; Xocova (brand name related); Antiviral protease inhibitor
EINECS	Contact for details

Quality Control

Our Ensitrelvir is manufactured and tested to meet exacting standards for pharmaceutical research and development. We employ rigorous analytical protocols including HPLC, NMR, and MS to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) is provided with each batch, detailing all critical quality attributes. Our quality system is designed to support regulatory filings, and we can supply material suitable for use under cGMP guidelines upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere or in a desiccated environment to maintain stability and purity. Avoid prolonged exposure to high humidity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Purity (HPLC, Total)	≥99.0%
Single Unknown Impurity	≤0.5%
Water Content (KF)	≤1.0%
Residue on Ignition	≤0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.