| CPC C07C 51/04 (2013.01) [C07C 59/285 (2013.01); C07B 2200/13 (2013.01)] | 20 Claims |
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1. A pharmaceutical material comprising a crystalline form of the compound of formula (V):
![]() or a pharmaceutically acceptable salt thereof;
wherein the pharmaceutical material comprises the compound of formula (V), or a pharmaceutically acceptable salt thereof, in an amount greater than 99.0% by weight based on the total weight of the pharmaceutical material; and the pharmaceutical material comprises 0.0001% to 0.15%
![]() or a pharmaceutically acceptable salt thereof, based on the total weight of the pharmaceutical material.
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