1 DIF 2-[2,6-dichlorophenyl)amino]benzeneacetic acid 1.000 2 7ZV 5-hydroxydiclofenac 0.950 3 LUR {2-[(2-chloro-6-fluorophenyl)amino]-5-methylphenyl}acetic acid 0.857 4 JMS 2-[(2,6-dichloro-3-methyl-phenyl)amino]benzoic acid 0.727