4-(4-溴苄亚基)-1-苯基-3,5-吡唑烷二酮

3,5-Pyrazolidinedione, 4-[(4-methoxyphenyl)methylene]-1-phenyl- (en)

4-methyl-1-phenyl-2H-pyrano[2,3-c]pyrazole-3,6-dione

1-phenyl-4-isopropylidenepyrazolidine-3,5-dione

1,4,4-trimethyl-2-phenylpyrazolidine-3,5-dione