16264-98-5 3,5-Pyrazolidinedione, 4-(2-(m-bromobenzoyl)ethyl)-1,2-diphenyl- 4-(2-(m-Bromobenzoyl)ethyl)-1,2-diphenyl-3,5-pyrazolidinedione 5-24-09-00311 (Beilstein Handbook Reference) BRN 0582511