1,25-Dihydroxy-23-oxo-vitamin D3 1,25-Dihydroxy-23-oxocholecalciferol 1,25-Dov 23-Keto-1,25-dihydroxyvitamin D3 82095-23-6 9,10-Secocholesta-5,7,10(19)-trien-23-one, 1,3,25-trihydroxy-, (1alpha,3beta,5Z,7E)-