1,2-Diphenyl-4-(p-acetamidoanilino)methylidyne-3,5-pyrazolidinedione 23711-51-5 3,5-Pyrazolidinedione, 1,2-diphenyl-4-(p-acetamidoanilino)methylidyne- 5-25-15-00485 (Beilstein Handbook Reference) BRN 0719440