1,25-Dihydroxy-26,27-dimethylcholecalciferol 1,25-Dihydroxy-26,27-dimethylvitamin D3 26,27-Dimethylcalcitriol 26,27-Dinor-9,10-secocholesta-5,7,10(19)-triene-1,3,25-triol, 25,25-diethyl-, (1alpha,3beta,5Z,7E)- 97473-92-2