1-Fenyl-3,5-dioxo-4-(3-fenyl-3-oxopropyl)pyrazolidin [Czech] 25809-73-8 3,5-Pyrazolidinedione, 4-(2-benzoylethyl)-1-phenyl- 4-(2-Benzoylethyl)-1-phenyl-3,5-pyrazolidinedione 5-24-09-00311 (Beilstein Handbook Reference) BRN 0561385