Patent ID: 8071638

Claim:
A crystalline form of atorvastatin potassium, denominated as Form A, characterized by data selected from the group consisting of: an X-ray powder diffraction pattern having peaks at 2.7 and 8.0Â±0.3 degrees 2Î¸ and a broad peak with a maximum at 18.5Â±0.3 degrees 2Î¸, a solid-state 13 C NMR spectrum with signals at 126.5, 133.0 and 167.5Â±0.2 ppm, a solid-state 13 C NMR spectrum having chemical shift differences between the signal exhibiting the lowest chemical shift and another signal in the chemical shift range of 100 to 200 ppm of 10.9, 17.4 and 51.9Â±0.1 ppm wherein the lowest chemical shift in the chemical shift area of 100 to 200 ppm is at 115.6Â±1 ppm, and combinations thereof.