1,2-Diphenyl-4-(p-ethoxycarbonylanilino)methylidyne-3,5-pyrazolidinedione 23711-54-8 5-25-15-00485 (Beilstein Handbook Reference) BENZOIC ACID, p-((3,5-DIOXO-1,2-DIPHENYLPYRAZOLIDINYLIDENE)METHYLAMINO)-, ETHYL BRN 2422825 Benzoic acid, p-((3,5-dioxo-1,2-diphenylpyrazolidinylidene)methylamino)-, ethyl ester p-((3,5-Dioxo-1,2-diphenylpyrazolidinylidene)methylamino)benzoic acid ethyl ester