| 3-(2-chlorophenyl)-5-(4-nitrophenylmethylene)-4-imidazolidinedione |
| 3-(2-chlorophenyl)-5-(4-nitrophenylmethylene)-2,4-imidazolidinedione |
| 3-(o-chlorophenyl)-5-(p-nitrobenzylidene)-hydantoi |
| 3-(2-chlorophenyl)-5-(4-nitrophenylmethylene)-4-imidazolidinedione |
