黑人巨大亚州宗合在线_欧美综合在线一区二区_亚洲第一天堂网站_99这里都是精品这里有精品

Product name: vitamin D₃

Molecular formula: C₂₇H₄₄O

Product Property: Cholecalciferol is another name for vitamin D₃. Colorless acicular crystal or white crystal powder; odorless and tasteless; perishable when exposed to light or air. It is freely soluble in ethanol, ether, chloroform, and acetone, sparingly soluble in plant oil, and insoluble in water. 

Pharmacology and effect: it’s a kind of vitamin medicine. Vitamin D₂ promotes calcium absorption of brush border of small intestinal mucosa and phosphorus reabsorption of kidney tubules, improves the levels of blood calcium and blood phosphorus, and works together with parathyroid hormone and calcitonin to accelerate old bones to release phosphorus, acid, and calcium so as to maintain and adjust the calcium and phosphorus concentrations in blood plasma.     

Indications: 1. Prevention and cure for vitamin deficiency; 2. Cure for chronic hypocalcemia, hypophosphatemia, rickets, and osteomalacia, familial hypophosphatemia, hypoparathyroidism that accompany chronic renal insufficiency; 3. Cure for acute, chronic, or potential post-operation tetany and idiopathic tetany.