dehydrocholesterol
/ˌdiːhaɪdrəʊkəˈlestərɒl/noun
mass noun
1- Biochemistry a derivative of cholesterol present in the skin. It can be converted to cholecalciferol (vitamin D3) by the action of ultraviolet radiation【生化】脱氢胆甾醇, 脱氢胆固醇。
1.1
- Chem. formula: C27H44O. The particular isomer involved in vitamin D3 formation is 7-dehydrocholesterol.化学分子式：C27H44O. 在维生素D3中的异构体是7-脱氢胆甾醇。
词源
1930s: from dehydro- 'that has lost hydrogen'+CHOLESTEROL.