ergosterol
Pronunciation: er-gos′tĕr-ol
Definition: The most important of the D2 provitamins; ultraviolet irradiation converts ergosterol to lumisterol, tachysterol, and ergocalciferol; main sterol in yeast, ergot, and molds.
Synonym(s): ergosterin
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Examples: glitazone, GI cocktail, etc.
