Synonyms: 9,10-Secoergosta-5,7,10(19),22-tetraene-3,25-diol,(3b,5Z,7E,22E)- (9CI);9,10-Secoergosta-5,7,10(19),22-tetraene-3b,25-diol (8CI);25-Hydroxycalciferol;25-Hydroxyergocalciferol;25-Hydroxyvitamin D;Cyclohexanol,4-methylene-3-[(2E)-2-[(1R,3aS,7aR)-octahydro-1-[(1R,2E,4S)-5-hydroxy-1,4,5-trimethyl-2-hexenyl]-7a-methyl-4H-inden-4-ylidene]ethylidene]-,(1S,3Z)-;Ercalcidiol;