Patent ID: 7649008

Claim:
A crystal of 4-(1-((4-methylbenzothiophen-3-yl)methyl)benzimidazol-2-ylthio)butanoic acid (crystal A), wherein the crystal form A is characterized by at least one of: (1) a crystal form A, which yields a powder X-ray diffraction pattern having characteristic peaks at reflection angles 2θ of approximately 9.0°, 15.2°, 16.4°, 19.2°, 20.6°, 22.3° and 22.6°; (2) a crystal form A, which yields a powder X-ray diffraction pattern as shown virtually in FIG. 1 (3) a crystal form A, which has peaks at wave numbers of approximately 1711, 1442, 1285, 1252, 1204, 771 and 750 cm −1 in an infrared absorption spectrum in potassium bromide; and (4) a crystal form A, which yields an absorption pattern as shown in FIG. 10 in an infrared absorption spectrum in potassium bromide.