1,25(OH2)D3 1,25-Dihydroxycholecalciferol 1-alpha,-1,25-Dihydroxyvitamin D3 32222-06-3 9,10-Secocholesta-5,7,10(19)-triene-1,3,25-triol, (1.alpha.,3.beta,.5Z,7E)- AIDS-000514 AIDS000514 Calcitriol