Synonyms: Butanedioicacid, mono[(4-butyl-3,5-dioxo-1,2-diphenyl-4-pyrazolidinyl)methyl] ester (9CI);Succinic acid, monoester with4-butyl-4-(hydroxymethyl)-1,2-diphenyl-3,5-pyrazolidinedione (8CI);3,5-Pyrazolidinedione, 4-butyl-4-(hydroxymethyl)-1,2-diphenyl-, hydrogensuccinate (ester) (8CI); 4-Hydroxymethylbutazolidine hemisuccinate; AE 17;Calibene; Danilon; Flogos; Solurol; Suxibutazone; Suxibuzone