methyl 5,5-dimethyl-2-phenylpyrazolidine-3-carboxylate

methyl 3,3-dimethyl-1-phenylpyrazolidine-4-carboxylate

4-Methyl-4-phenylazo-pentanoic acid methyl ester

1-phenyl-1-(propan-2-ylideneamino)urea

1,2-二苯甲酰基-1-苯基肼