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Tag: diphthalide derivatives User: Drkrishnasarmapathy

Blob Novel polymorph of 5-cyanopthalide high purity inter...

Created: 2012-07-24 12:02:16

Credits: User Drkrishnasarmapathy

License: Creative Commons Attribution-Share Alike 3.0 Unported License

The present invention relates to obtaining a new polymorph of 5-Cyanophthalide in highly pure form (99.5 to 99.99%), which is an intermediate used forthe synthesis of citalopram& escitalopram both of which are potent antidepressant drugs.Moreover this new polymorph of 5-cyanophthalide does not contain impurities liketerephthalic acid & diphthalide derivatives.        

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