Patent ID: 8399469

Claim:
Hydrate A of aripiprazole characterized by one or more of the properties chosen from: a powder x-ray diffraction spectrum comprising characteristic peaks at 20=12.6° , 15.4° , 17.3° , 18.0° , 18.6° , 22.5° and 24.8° using a Cu K α x-ray; an infrared absorption spectrum comprising infrared absorption bands at 2951, 2822, 1692, 1577, 1447, 1378, 1187, 963 and 784 cm -1 on the IR (KBr) spectrum; and an endothermic trace comprising an endothermic peak at about 71° C. and a second endothermic peak around 60° C. to 120° C. in a thermogravimetric or differential thermal analysis (heating rate 5° C/min).