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Azilsartan Alkyl ester, azilsartan methyl ester production method, and azilsartan production method
Azilsartan Alkyl ester, azilsartan methyl ester production method, and azilsartan production method
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机译:Azilsartan烷基酯,Azilsartan甲酯制备方法,以及氮硅酸盐的生产方法
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摘要
PROBLEM TO BE SOLVED: To provide azilsartan alkyl ester as an intermediate of azilsartan, a method for producing azilsartan methyl ester having a novel crystalline form, and a method for producing high-purity azilsartan from the obtained compound. SOLUTION: A method for producing a high-purity azilsartan alkyl ester and / or azilsartan methyl ester by crystallizing the azilsartan alkyl ester and / or the azilsartan methyl ester in acetone or a mixed solvent of acetone and alcohol. I will provide a. [Selection diagram] Fig. 1
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