1-25-Dihydroxy-23,23-difluorovitamin D3 1-alpha-25-Dihydroxy-23,23-difluorovitamin D3 25-OH-DF-D3 9,10-Secocholesta-5,7,10(19)-triene-1,3,25-triol, 23,23-difluoro-, (1alpha,3beta,5Z,7E)- 98040-59-6