Process for the preparation of pure risedronic acid or salts

The present invention relates to an industrially advantageous process of making bisphosphonic acid or its salt in particular risedronic acid, [1-hydroxy-2(3-pyridinyl)ethylidene]bisphosphonic acid, having formula-(I) or its salts in high purity and high yields.

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Bibliographic Details
Main Authors Rahul, Saxena, Kumar, Jain Anshul, Venkateswaran, Srinivasan Chidambaram, Lalit, Wadhwa
Format Patent
LanguageEnglish
Published 13.12.2011
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Summary:The present invention relates to an industrially advantageous process of making bisphosphonic acid or its salt in particular risedronic acid, [1-hydroxy-2(3-pyridinyl)ethylidene]bisphosphonic acid, having formula-(I) or its salts in high purity and high yields.