CAS Registry Number

CAS 434-16-2 — 7-Dehydrocholesterol

7-Dehydrocholesterol is a sterol compound and key precursor in the biosynthesis of vitamin D3 in the skin upon UVB exposure. It serves as a critical intermediate in biochemical research, pharmaceutical development, and studies of cholesterol metabolism and dermatological processes. This high-purity 7-dehydrocholesterol has a CAS number of 434-16-2, molecular formula C27H44O, and a molecular weight of 384.6377 g/mol. Store at -18°C for stability, with no signal word required for hazard classification. Molekula supplies 7-dehydrocholesterol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.