An improved process for the preparation of non-hygroscopic...

Details An improved process for the preparation of non-hygroscopic... An improved process for the preparation of non-hygroscopic...

C - Chemistry, Metallurgy

07

H

C07H 17/08 (2006.01) C07H 17/00 (2006.01)

Patent

CA 2369255

The invention discloses an improved process for preparing non-hygroscopic Azithromycin dihydrate wherein Azithromycin monhydrate can be converted to Azithromycin dihydrate with continous stirring/agitation in presence of a mixture of at least one solvent such as herein described and water till non-hygroscopic crystals of Azithromycin dihydrate are obtained.The solvent in the process of the invention can be selected from the group comprising dimethylformamide, dimethylacetamide, acetonitrile and iso-propanol.

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