Crystalline forms of GRAPIPRANT

The present disclosure provides a crystalline form of grapiprant selected from the group consisting of Form X, Form X2, Form X3, Form F, Form K, Form L, Form M, and Form N. Also provided is a pharmaceutical composition, the composition comprising at least one crystalline form of grapiprant, and at least one pharmaceutically acceptable excipient, wherein the crystalline form of grapiprant is selected from the group consisting of Form X, Form X2, Form X3, Form F, Form K, Form L, Form M, and Form N. Other aspects of the disclosure provide a process for preparing a substantially pure crystalline Form A of grapiprant. The process comprises contacting grapiprant at ambient temperature with a solvent comprising dichloromethane and acetone to form a saturated or a near saturated solution. Crystals of the substantially pure crystalline Form A of grapiprant are formed. 本发明提供grapiprant的结晶形式，其选自下组：形式X、形式X2、形式X3、形式F、形式K、形式L、形式M和形式N。本发明还提供药物组合物，该组合物包含grapiprant的至少种结晶形式和至少种药学上可接受的赋形剂，其中grapiprant的该结晶形式选自下组：形式X、形式X2、形式X3、形式F