| CPC C07D 487/04 (2013.01) [A61K 31/519 (2013.01)] | 12 Claims |

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1. A crystalline form-M5 of 1-[(3R)-3-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one compound of formula-1
![]() characterized by its PXRD pattern peaks at about 6.3, 10.0, 12.8, 13.7, 17.2, 18.1, 19.4, 20.2, 20.9, 21.6, 23.1, 23.7, 24.6, 26.2 and 27.7±0.2° of 2θ.
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