20358-38-7 3,5-Pyrazolidinedione, 4-(2-(p-sec-butylbenzoyl)ethyl)-1,2-diphenyl- 4-(2-(p-sec-Butylbenzoyl)ethyl)-1,2-diphenyl-3,5-pyrazolidinedione 5-24-09-00318 (Beilstein Handbook Reference) BRN 0586373