US Patent 7439385 Process for the preparation of biphosphonic derivatives
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Patent Inventor Names
Pandurang Balwant Deshpande0
Parven Kumar Luthra0
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Patent abstract
The present invention provides a novel process for preparation of bisphosphonic acid derivatives or pharmaceutical acceptable salt thereof, by reacting carboxylic acid having structural formula (II) with phosphorous acid and a halophosphorous compound, wherein halophosphorous compound is selected from the group comprising of PCl3, PCl5, POCl3, PBr3, POBr3, and PBr5 in presence of diphenyl ether.
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US Patent 07439385 Process for the preparation of biphosphonic derivatives US Patent 7439385 Process for the preparation of biphosphonic derivatives
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Patent Number
074393850
Patent Number
74393850
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Patent Jurisdiction
Patent Number
074393850
Date of Patent
October 21, 2008
0Patent Application Number
114916960
Date Filed
July 24, 2006
0Official Website
Patent Primary Examiner
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US Patent 07439385 Process for the preparation of biphosphonic derivatives
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Is a
Patent jurisdiction
Patent number
07439385
Date of patent
October 21, 2008
Patent application number
11491696
Date Filed
July 24, 2006
Patent primary examiner
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