英文名称:Impurity A Of Tacalcitol; IMpurity A of Tacalcitol; 1,3-Cyclohexanediol, 4-Methylene-5-[(2E)-2-[(1R,3As,7Ar)-Octahydro-1-[(1R,4R)-4-Hydroxy-1,5-Dimethylhexyl]-7A-Methyl-4H-Inden-4-Ylidene]Ethylidene]-, (1R,3S,5E)-; Tacalcitol Ep Impurity A; Tacalcitol Impurity A