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Crystal forms of saxagliptin and processes for preparing same

  • US 7,943,656 B2
  • Filed: 04/18/2008
  • Issued: 05/17/2011
  • Est. Priority Date: 04/20/2007
  • Status: Expired due to Fees
First Claim
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1. A crystalline compound of form H2-1 (1HCl), H2-1 (2HCl), H0.75-3, H1.67-1, P-5, or mixtures thereof,wherein the crystalline compound of form H2-1 (1HCl) has structure

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