Synthesis of highly pure esomeprazole sodium with polymorphic form J

Author : Sandip Sadaphal, Huang Xiangliang, Xu Cong

The present disclosure relates to a process of preparing excellent quality esomeprazole sodium, which is devoid of product related impurities. Esomeprazole sodium performed via preparation of sodium-salt using key starting material esomeprazole potassium. Herein, reported an excellent method to get polymorph J of esomeprazole sodium using acetonitrile maceration. In this development overall yield is 70-80% with purity more than 99%.

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