Synonyms: Vitamin D3;cholecalciferol;AC1L1ECK;VITAMIN D3 POWDER;67-97-0;9,10-secocholesta-5,7,10-trien-3-ol;1406-16-2;(3S)-9,10-secocholesta-5,7,10-trien-3-ol;9,10-Secocholesta-5,7,10(19)-trien-3beta-ol;(3R,5E,7E,17alpha)-9,10-secocholesta-5,7,10-trien-3-ol;3-[2-[7a-methyl-1-(6-methylheptan-2-yl)-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol