16264-94-1 3,5-Pyrazolidinedione, 4-(2-(o-chlorobenzoyl)ethyl)-1,2-diphenyl- 4-(2-(o-Chlorobenzoyl)ethyl)-1,2-diphenyl-3,5-pyrazolidinedione 5-24-09-00311 (Beilstein Handbook Reference) BRN 0584280