Delta crystalline form of perindopril L-arginine salt (I) having X-ray powder diffraction peaks measured using a diffractometer with a copper anticathode and expressed in terms of Bragg's angle 2 theta values as given in the specification, is new. Independent claims are included for: (1) the preparation of delta crystalline form of (I)； and (2) a composition comprising an active agent and the delta crystalline form of (I) in combination with carriers. ACTIVITY : Cardiovascular-Gen； Hypotensive； Cardiant； Vasotropic. MECHANISM OF ACTION : Angiotensin I converting enzyme inhibitor.Delta kristalni oblik L-argininske soli perindoprila. formule (I):naznačen time što su pikovi RX difrakcije na prašku, mereni na difraktometru na bakarnoj antikatodi, koji su izraženi kao Braggov ugao 2 teta (°), sledeći: 4,3 11,0 11,1 13,2 14,6 16,0 i 21,9. Prijava sadrži još 15 patentnih zahteva.
