chinese name: 7 - dehydrocholesterol
3β-cholesteryl-5,7-diene; 7-dihydrocholesterol-3-di hydrate; cholesty-5,7-diene-3β-ol; vitamin d3 precursors; 7-dehydrocholesterol containing 1 m methanol crystals; 7-dehydrocholesterol
english name: 7-dehydrocholesterol
(3-beta) -cholesta-7-dien-3-ol; (3beta) -cholesta-7 (3-beta) -cholesta-7-dien-3-ol; 3-hydroxycholesta-5,7-diene; 5,7-cholestandien-3.beta.-ol; 5,7-cholestandien-3beta-ol; 7,8-didehydrocholesterol
cas number: 434-16-2
molecular formula: c27h44o
molecular weight: 384.64
chemical properties flake crystallization (methanol aqueous solution / ether). melting point 150-151 ° c (anhydrous). [α] 20 / d-113.6 ° (chloroform). exposure to air is easy to oxidize.
use vitamin d3 intermediates.
medical grade 90% white powder 25kg / cardboard drum