| dehydrocholesterols | Cholesterol derivatives having an additional double bond in any position. 24-dehydrocholesterol is desmosterol. The other most prevalent dehydrocholesterol is the 7-isomer. This compound is a precursor of cholesterol and of vitamin d3. (12 Dec 1998) |
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| 24-dehydrocholesterol | <chemical> Chemical name: Cholesta-5,24-dien-3-ol, (3beta)- (12 Dec 1998) |
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| 7-dehydrocholesterol | Cholesta-5,7-dien-3b-ol;a zoosterol in skin and other animal tissues that upon activation by ultraviolet light becomes antirachitic and is then referred to as cholecalciferol (vitamin D3). Synonym: provitamin D3. (05 Mar 2000) |