25-羥基維生素D3 一水合物, 99%
Product Name： 25-Hydroxyvitamin D3 monohydrate
別名:25-羥基維生素D3 ;骨化二醇，(5Z,7E)-9,10-開環(huán)膽甾-5,7,10(19)-三烯-3b,25-二醇一水合物
CAS號:63283-36-3
分子式:C27H44O2·H2O
分子量:418.65
特定比重： 1.3
生化和生理學(xué)機(jī)理：
Calcifediol is a prehormone that is produced in the liver by hydroxylation of vitamin D3 (cholecalciferol) by the enzyme cholecalciferol 25-hydroxylase which was isolated by Michael F. Holick. This metabolite is being measured by physicians worldwide to determine a patient's vitamin d status.Calcifediol is then converted in the kidneys (by the enzyme 25(OH)D-1α-hydroxylase) into calcitriol (1,25-(OH)2D3), a secosteroid hormone that is the active form of vitamin D. It can also be converted into 24-hydroxycalcidiol in the kidneys via 24-hydroxylation. From Wikipedia
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