| Synonyms: | BRN 4715875;(1R,3S,E)-5-((E)-2-((3aS,7aR)-7a-Methyl-1-((R)-6-Methylheptan-2-yl)dihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diol;1α-Hydroxy-5,6-trans-vitamin D3;Alfacalcidol EP impurity A;(1R,3S,E)-5-((E)-2-((1R,3aS,7aR)-7a-methyl-1-((R)-6-methylheptan-2-yl)hexahydro-1H-inden-4(2H)-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diol;Alfacalcidol Impurity A;Alfacalcidol Impurity 1（Alfacalcidol EP Impurity A）;(1R,3S,5Z,7E)-9,10-Secocholesta-5,7,10-triene-1,3-diol |