p-Chlorobenzoic acid is a major metabolite of analgesic agent zomepirac sodium in rat (present as conjugates) and mouse and a minor one in monkey and man. It is a metabolite of antidepressant Lofepramine hydrochloride, and anxiolytic and a muscle relaxant Chlormezanone too. Sodium salt of p-Chlorobenzoic acid is used as a preservative. p-Chlorobenzoic acid may prove useful clinically to prevent and reverse the accumulation of toxic levels of acyl- and arylCoA esters. If the hepatic damage in Reye’s Syndrome is due to the dead-end formation of the CoA esters of acyl- and aryl-CoA esters, then p-chlorobenzoic acid may block their formation, thereby relieving the inhibitions of gluconeogenesis and urea synthesis and preventing some of the damage to the liver.

RU 28318 also known as OXPRENOATE is a mineralocorticoid receptor (MR) antagonist, inhibiting aldosterone production and secretion. RU 28318 has been studied in normal and diabetic rats. It was revealed, that in combination with angiotensin converting enzyme inhibitors, RU 28318 was the most effective at improving -dP/dt (a measure of diastolic function) and attenuated cardiac dysfunction in diabetes.