4-((3-(methoxycarbonyl)-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl)diazenyl)benzenesulfonic acid compound with 4-(2-(3-(methoxycarbonyl)-5-oxo-1-(4-sulfophenyl)-1,5-dihydro-4H-pyrazol-4-ylidene)hydrazinyl)benzenesulfonic acid
Tartrazine Impurity 4 is a fully characterized chemical compound used as a reference standard of API Tartrazine. The standard offered is compliant with regulatory guidelines. Tartrazine Impurity 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 - 791545-81-8 (hydrazone form)