Patent ID: 7186848

Claim:
Crystalline form I (4R-cis)-6-[2-[3-phenyl-4-(phenyl-carbamoyl)-2-(4-fluoro-phenyl)-5-(1-methyl-ethyl)-pyrrol-1-yl]-ethyl]-2,2-dimethyl-[1,3]dioxane-4-yl-acetic acid-tertiary butyl ester of the Formula having a melting point range of 140-142° C., characterized by the X-ray powder diffraction pattern expressed in Table 1 and FIG. 1 , measured using CuK α radiation: TABLE 1 Position of diffraction lines and relative intensities (>10% of polymorph I) Peak 2*th d(hkl) I(abs) I(rel) No. [deg] [Ĺ] [cts] [%] 1 9.85 8.9800 6701 100.00 2 11.20 7.8983 996 14.86 3 13.14 6.7401 771 11.51 4 15.89 5.5793 1043 15.56 5 17.76 4.9940 2565 38.28 6 18.29 4.8508 2710 40.44 7 18.69 4.7483 2152 32.11 8 19.17 4.6300 3325 49.62 9 19.66 4.5155 983 14.67 10 20.24 4.3865 10064 15.88 11 21.10 4.2107 671 10.01 12 21.49 4.1351 1362 20.33 13 22.05 4.0310 889 13.27 14 22.90 3.8836 863 12.88 15 26.41 3.3749 681 10.16 16 26.95 3.3080 597 8.91 17 27.89 3.1995 612 9.13.