中文名称:倍他米松杂质中文同义词:英文名称:1,2-Dihydro-BetaMethasone17,21-Dipropionate英文同义词:BetamethasoneDipropionateimpurity6/BetamethasoneDipropionateEPImpurityI/1,2-Dihydro-Betamethasone17,21-Dipropionate/(8S,9R,10S,11S,13S,14S,16S,17R)-9-Fluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-17-(2-(propionyloxy)acetyl)-2,3,6,7,Chemicalbook8,9,10,11,12,13,14;1,2-Dihydro-BetaMethasone17,21-Dipropionate;BetamethasoneDipropionateEPImpurityI;BetamethasoneDipropionateImpurity9（BetamethasoneDipropionateEPImpurityI）CAS号:80163-83-3分子式:C28H39FO7分子量:506.6034632EINECS号:相关类别:Pharmaceuticals,Intermediates&FineChemicals,SteroidsMol文件:80163-83-3.mol

性状：白色或乳白色结晶性粉末，无嗅，味苦。溶于乙醇

几乎不溶于水。熔点：236-244度

工艺流程：缩酮-还原-消除-加成-水解-消除-碘化-置换-加成-环氧-乙酰化-加成-水解-精制