2-[2-[(2-Bromo-6-chlorophenyl)amino]phenyl]acetic Acid; 2-[(2-Bromo-6-chlorophenyl)amino]phenylacetic Acid; Diclofenac bromo analog; 2-{2-[(2-Bromo-6-chlorophenyl)amino]phenyl}acetic acid; Diclofenac EP Impurity D