1,2-Diphenyl-4H-butyl-(4-orthocarboxyanilinobenzyl)-3,5-pyrazolidinedione 19854-90-1 Anthradion Antradion Benzoic acid, 2-(((4-butyl-3,5-dioxo-1,2-diphenyl-4-pyrazolidinyl)phenylmethyl)amino)-