The molecule is a mmeber of the class of imidazolines and organic radical that is 4,4,5,5-tetramethyl-3-oxo-4,5-dihydro-1H-3lambda(5)-imidazol-1-yl]oxidanyl substituted at position 2 by a 4-carboxyphenyl group. It has a role as a radical scavenger and an apoptosis inhibitor. It is an organic radical, a benzoic acid and a member of imidazolines. It is a conjugate base of a carboxylato-PTIO.