Aripidrazol based drug with reduced hygroscopicity (glass e) and their method of preparation.

Anhydrous Aripiprazole Crystals E having a spectrum of X-ray diffraction of a powder having characteristic peaks at 2θ = 8.0 °, 13.7 °, 14.6 °, 17.6 °, 22.5 ° and 24.0 °.