Patent ID: 7705046

Claim:
δ crystalline form of perindopril erbumine, characterised by the following X-ray diffraction data (measured on a powder diffractometer with CuK α irradiation): Relative Angle 2 theta Lattice spacing intensity (°) d (Å) I/I max (%) 5.27 16.79 2 8.93 9.93 100 9.75 9.10 32 10.65 8.34 10 14.63 6.10 25 14.97 5.97 39 15.27 5.85 48 15.95 5.61 53 17.27 5.19 18 17.87 5.02 15 18.63 4.83 13 19.99 4.51 29 20.37 4.43 26 21.31 4.24 57 21.83 4.15 37 22.49 4.03 26 23.15 3.92 19 23.65 3.84 29 23.99 3.79 16 24.71 3.69 15 25.33 3.60 15 25.75 3.55 15 26.43 3.46 21 26.77 3.42 18 28.19 3.26 24.