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US 12,583,869 B2Granted
Salt form and crystal form of A2A receptor antagonist and preparation method therefor
AssigneesCstone Pharmaceutical (Suzhou) Co., Ltd., Cstone Pharmaceuticals (Shanghai) Co., Ltd., Cstone Pharmaceuticals
InventorsKevin X Chen, Kai Zhou, Yanxin Yu, Boyu Hu, Li Zhang, Zhaoguo Chen
Life of this patent
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Abstract
Provided are a salt form and a crystal form of adenosine A2A receptor antagonist, and preparation method therefor. Also provided is an application of the salt form or crystal form in the preparation of a medicine for A2A receptor-related diseases, the maleate salt in the salt form has a structure of formula (I).
Claims4
A crystal form of the compound of formula (I),
- wherein an X-ray powder diffraction pattern thereof has characteristic diffraction peaks at the following 2θ angles:
- 7.16±0.2°, 9.66±0.2°, and 19.66±0.2°.
Dependencies are inferred from the claim text.