Polymorphs of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid and method of producing the same

  • US 6,225,474 B1
  • Filed: 02/17/2000
  • Issued: 05/01/2001
  • Est. Priority Date: 06/19/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A polymorph of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid, which shows a X-ray powder diffraction pattern having characteristic peaks at a reflection angle 2θ

  • of about 6.62, 7.18, 12.80, 13.26, 16.48, 19.58, 21.92, 22.68, 25.84, 26.70, 29.16 and 36.70°

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