4-(4,5-dimethoxy-2-methyl-3,6-dioxocyclohexa-1,4-dien-1-yl)butanoicacid
QS-4 is a fully characterized chemical compound used as a reference standard of API Idebenone. The standard offered is compliant with regulatory guidelines. QS-4 is used for analytical method development, method validation (AMV), and Quality Controlled (QC) applications during synthesis and formulation stages of drug development and serves as a reference standard for traceability against pharmacopeial standards (USP or EP). Axios Research products are intended for analytical purposes only and are not for human use. CAS - 58186-01-9