Polymorphs
First Claim
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1. An anhydrous polymorph A of the compound 1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-amino-piperidin-1-yl)-xanthine, characterised in that it melts at 206±
- 3°
C.
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Abstract
The invention relates to polymorphous crystal modifications of a DPP-IV inhibitor, the preparation thereof and the use thereof for preparing a medicament.
379 Citations
35 Claims
- 1. An anhydrous polymorph A of the compound 1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-amino-piperidin-1-yl)-xanthine, characterised in that it melts at 206±
-
5. An anhydrous polymorph E of the compound 1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-amino-piperidin-1-yl)-xanthine, characterised in that it melts at 175±
- 3°
C.
- 3°
- 27. A medicament containing 0.1% to 0.5% or 0.5% to 1.5% or 1% to 3% of polymorph B as defined in claim in addition to one or more inert carriers.
Specification