#$%^&*AU2012268815A120130718.pdf#####DELTA CRYSTALLINE FORM OF THE ARGININE SALT OF PERINDOPRIL, A PROCESS FOR ITS PREPARATION, AND PHARMACEUTICAL COMPOSITIONS THEREOF Abstract Delta crystalline form of the compound of formula (I): H OH NH2 : N CO~, I H 2 N NH H CHH3 H 3 (s) " NH 2 NH (s) CO2Et characterised by its X-ray powder diffraction diagram. Medicaments and methods of medical treatment are also disclosed.