Patent ID: 7393839

Claim:
A polymorphic hemihydrate crystalline form (Form A) of a compound according to formula Ib with an x-ray powder diffraction trace having D-spacing essentially as shown: (Ib) D-space I/I o × 100 9.1200 35.42 6.4204 39.48 5.6103 33.43 4.9820 68.77 4.8788 41.38 4.5547 66.82 4.5098 36.84 4.4227 55.89 4.3497 43.98. 4.3019 35.58 4.0573 50.71 3.7012 100.0 3.5856 34.16 3.3832 53.52 3.2480 48.14 2.6876 40.44 2.5744 26.15.