3,20-Dioxopregn-4-en-21-oic acid is a fully characterized chemical compound used as a reference standard of API Pregnenoic acid. The standard offered is compliant with regulatory guidelines. 3,20-Dioxopregn-4-en-21-oic acid 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 - 2681-57-4