US Patent 7531658 Process for the preparation of 17-N-substituted-carbamoyl-4-aza-androst-1-en-3-ones
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Patent Inventor Names
Alfredo Paul Ceccarelli0
Bhaskar Reddy Guntoori0
Mohammed Abdul Raheem0
Zhi-Xian Wang0
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Patent abstract
The present invention relates to a process for producing 17-N-substituted-carbamoyl-4-aza-androst-1-en-3-ones of formula 1, including Finasteride and Dutasteride.
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US Patent 07531658 Process for the preparation of 17-N-substituted-carbamoyl-4-aza-androst-1-en-3-ones US Patent 7531658 Process for the preparation of 17-N-substituted-carbamoyl-4-aza-androst-1-en-3-ones
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Patent Number
07531658
Patent Number
7531658
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Official Website
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US Patent 07531658 Process for the preparation of 17-N-substituted-carbamoyl-4-aza-androst-1-en-3-ones
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Patent jurisdiction
Patent number
07531658
Date of patent
May 12, 2009
Patent application number
11335782
Date Filed
January 20, 2006
Patent primary examiner
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