Ergocalciferols - ț̢
Derivatives of ERGOSTEROL formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. They differ from CHOLECALCIFEROL in having a double bond between C22 and C23 and a methyl group at C24.
Synonyms : Ergocalciferol, Vitamin D2, D 2, Vitamin, D2, Vitamin