4-氯-1,2-二氢-1-苯基哒嗪-3,6-二酮

5-甲基-2-苯基-3-吡唑烷酮

5-methyl-1-phenylpyrazolidin-3-one

1-anilino-3-methylthiourea

N-(fluoren-9-ylideneamino)aniline