Synonyms:Calciferol; Ergocalciferol; Oleovitamin D2; 9,10-Secoergosta-5,7,10,22-tetraen-3-ol Specification: 100,000IU/G, 500,000IU/G,2 MIU/g, 40MIU/g Molecular formula: C28H44O Shape and Properties: White to faint yellow powder, no foreign matter, and no odor. Application: Health Care Foods, Food Supplements, and Pharmaceuticals.