2β-trans-eldecalcitol Eldecalcitol Impurity 1 2β-trans-eldecalcito 2β-trans-eldecalcitol (5E,7E)-(1R,2R,3R)-2-(3-hydroxypropoxy)-9,10-secocholesta-5,7,10(19)-triene-1,3,25-triol 2α-trans-Eldecalcitol (1R,2R,3R,E)-5-(2-((1R,3aS,7aR,E)-1-((R)-6-hydroxy-6-methylheptan-2-yl)-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene)-2-(3-hydroxypropoxy)-4-methylenecyclohexane-1,3-diol 9,10-Secocholesta-5,7,10(19)-triene-1,3,25-triol, 2-(3-hydroxypropoxy)-, (1α,2β,3β,5E,7E)- (9CI)