Loading AI tools
Chemical compound From Wikipedia, the free encyclopedia
Previtamin D3 is an intermediate in the production of cholecalciferol (vitamin D3).
Names | |
---|---|
IUPAC name
(3S,6Z)-9,10-Secocholesta-5(10),6,8-trien-3-ol | |
Systematic IUPAC name
(1S)-4-Methyl-3-[(Z)-2-{(1R,3aR,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-2,3,3a,6,7,7a-hexahydro-1H-inden-4-yl}ethen-1-yl]cyclohex-3-en-1-ol | |
Other names
Previtamin D3 | |
Identifiers | |
3D model (JSmol) |
|
ChemSpider | |
ECHA InfoCard | 100.013.304 |
EC Number |
|
MeSH | Previtamin+D(3) |
PubChem CID |
|
UNII | |
| |
| |
Properties | |
C27H44O | |
Molar mass | 384.648 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
It is formed by the action of UV light, most specifically UVB light of wavelengths between 295 and 300 nm, acting on 7-dehydrocholesterol in the epidermal layers of the skin.[1][2][3]
The B ring of the steroid nucleus structure is broken open, making a secosteroid. This then undergoes spontaneous isomerization into cholecalciferol, the prohormone of the active form of vitamin D, calcitriol.
The synthesis of previtamin D3 is blocked effectively by sunscreens.[4]
Click on genes, proteins and metabolites below to link to respective articles. [§ 1]
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.