Patent ID: 8344028

Claim:
A compound of Formula (I): or a pharmaceutically acceptable salt thereof, wherein: R 1 is chosen from hydrogen and halogen; R 2 is halogen; one of R 3 and R 4 is —X—Y, and the other of R 3 and R 4 is hydrogen, wherein: X is chosen from a covalent bond, C 1-3 alkyldiyl, substituted C 1-3 alkyldiyl, C 1-3 heteroalkyldiyl, and substituted C 1-3 heteroalkyldiyl; and Y is chosen from C 6-12 aryl, substituted C 6-12 aryl, C 5-12 heteroaryl, and substituted C 5-12 heteroaryl; and R 5 is chosen from —COOH, —SOOH, and —P(O)(OH)R 8 wherein R 8 is chosen from hydrogen and C 1-4 alkyl.