1,2-Diphenyl-4-(2-(1-naphthoyl)ethyl)-3,5-pyrazolidinedione 20358-42-3 3,5-Pyrazolidinedione, 1,2-diphenyl-4-(2-(1-naphthoyl)ethyl)- 5-24-09-00355 (Beilstein Handbook Reference) BRN 0587719