Patent ID: 8377929

Claim:
A crystalline form of perphenazine 4-aminobutyrate trimesylate, having at least one of: (a) an X-Ray Powder Diffraction (XRPD) pattern exhibiting at least five of the peaks selected from the group consisting of 2Θ values (in units of degrees) of about 4.7, 5.4, 6.4, 7.8, 12.8, 14.0, 15.3, 15.7, 16.0, 16.1, 16.9, 17.7, 18.0, 19.7, 20.0, 20.6, 21.0, and 21.2; and (b) a Differential Scanning Calorimetry (DCS) exhibiting an endothermic peak at between about 209° C. to about 214° C.