... , USP32 4. 67-97-0 Description Vitamin D3 Crystal Pharma Grade, obtained from esterification, hydrolyzation and refining of ... of 103% percent of (5Z,7E)-9,10-secocholesta-5,7,10(19)-trien-3β-ol. Identification cholecalciferol; ... calciol; (5Z,7E)-9,10-secocholesta-5,7,10(19)-trien-3β-ol; (5Z,7E)-(3S ... )-9,10-secocholesta-5,7,10(19)-trien-3-ol; vitamin D3 ...