1,2-Diphenyl-4-(N-morpholino)methylene-3,5-pyrazolidinedione 1,2-Diphenyl-4-(morpholinomethylene)-3,5-pyrazolidinedione 24665-83-6 3,5-Pyrazolidinedione, 1,2-diphenyl-4-(morpholinomethylene)- BRN 1158915