131801-98-4 25-Hydroxy vitamin D3-26,23-lactone 25-Hydroxycholecalciferol-26,23-lactone 25-Hydroxyvitamin D(3) 26,23-lactone 25-Ohd(3)-26,23-lactone 71302-34-6 9,10-Secocholesta-5,7,10(19)-trien-26-oic acid, 3,23,25-trihydroxy-, gamma-lactone, (3beta,5Z,7E)- calcifediol lactone