The Ergocalciferol reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Ergocalciferol

Ergocalciferol is a form of Vitamin D with the systematic name (5Z,7E,22E)-(3S)-9,10-seco-5,7,10(19),22-ergostatetraen-3-ol. It is created from viosterol, which in turn is created when ultraviolet light activates ergosterol.

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