Vitamin D is steroid derivatives. It is the general term for the compounds that have similar structures and have the effect of normal skeletal growth and maintenance. At present, there are at least more than ten kinds of sterols that have vitamin D activity. But there are only two important matters, which are known as pro-vitamin D. One is ergosterol that exists in vegetable oil or yeast, which can generate vitamin D2 when irradiated by sunlight or ultraviolet radiation. It is also known as cholecalciferol or ergocalciferol. Another is 7-dehydrochlesterol that exists in the skin. It will become vitamin D3 after irradiated by the light. It is also called cholecalciferol. D2 and D3 have similar structures. They are B ring derivatives of precursors of the sterol. The difference is that the side chain of vitamin D2 has a methyl group and one double bond.
Vitamin D3 can maintain normal metabolism of calcium and phosphorus, promote the body's absorption of calcium and phosphorus. Vitamin D3 can maintain normal metabolism of calcium and phosphorus and promote the body's absorption of calcium and phosphorus. It mainly can promote intestinal absorption and deposition of calcium and phosphorus for the treatment of rickets and osteomalacia. It is mainly used in food, health products and other related products.
Brand: Soarwin
CAS No.: 67-97-0
Molecular Formula: C27H44O
EC Number: 200-673-2
Density:0.9717 (rough estimate)
Boiling point: 451.27°C (rough estimate)
Melting point: 83-86 °C(lit.)
Flash point: 14°C
China
