Patent ID: 7816558

Claim:
A triarylcarboxylic acid compound represented by the following formula (I) or a salt thereof: wherein: A: aryl or heteroaryl, wherein aryl and heteroaryl may be substituted with the same or different, 1 to 3 substituents selected from the following group G; group G: halogen, —CN, —NO 2 , lower alkyl, halogeno-lower alkyl, —O—R 1 , —O-halogeno-lower alkyl, —O—CO—R 1 , —O-benzyl, —O-phenyl, —NR 2 R 3 , —NH—CO—R 1 , —CO 2 —R 1 , —CO—R 1 , —CO—NR 2 R 3 , —CO-phenyl, —S—R 1 , —SO 2 -lower alkyl, —SO 2 -phenyl, —NH—SO 2 -naphthalene-NR 2 R 3 , phenyl, cycloalkyl, and -lower alkylene-O—R 1 ; R 1 : H or lower alkyl; R 2 and R 3 : same or different, each representing H or lower alkyl, wherein R 2 and R 3 , taken together with the nitrogen atom to which they bond, may form a monocyclic nitrogen-containing saturated heterocycle; and B: monocyclic heteroaryl, wherein the monocyclic heteroaryl may be substituted with a group selected from lower alkyl, —OH, and halogen.