| CPC C07D 471/04 (2013.01) [C07B 2200/13 (2013.01)] | 12 Claims |
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1. A polymorphically pure crystalline form of Ribociclib succinate designated form B, defined by data selected from one or more of the following:
(i) an X-ray powder diffraction pattern having peaks at 6.5, 7.5, 10.2, 10.9 and 12.0 degrees two theta ±0.2 degrees two theta;
(ii) an X-ray powder diffraction pattern having peaks at 6.5, 7.5, 10.2, 10.9 and 12.0 degrees two theta ±0.2 degrees two theta and also having any one, two, three, four or five additional peaks selected from 14.6, 20.2, 20.7, 25.4 and 26.6 degrees two theta ±0.2 degrees two theta;
(iii) an X-ray powder diffraction pattern substantially as depicted in FIG. 2;
(iv) a solid state 13C NMR spectrum having peaks at 183.0, 165.5, 156.5, 138.3 and 103.1 ppm ±0.2 ppm;
(v) a solid state 13C NMR spectrum having the following chemical shift absolute differences between said characteristic peaks at 183.0, 165.5, 156.5, 138.3 and 103.1 ppm ±0.2 ppm and a reference peak at 122.3 ppm ±1 ppm of 60.7, 43.2, 34.1, 15.9 and (−19.2) ±0.1 ppm; or
(vi) a solid state 13C NMR spectrum substantially as depicted in FIG. 12 or substantially as depicted in FIG. 13;
(vii) an FT-IR spectrum having absorptions at 1605, 1525, 1399, 1261 and 786 cm−1 ±4 cm−1;
(viii) an FT-IR spectrum substantially as depicted in FIG. 8 or substantially as depicted in FIG. 9.
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