5-氯-1-甲基-1H-吡唑-4-甲腈

1,4-哌嗪二甲酰胺

5-hydroxy-5-(trifluoromethyl)imidazolidine-2,4-dione

1,3-dimethyl-2H-pyrazolo[3,4-d]pyrimidine-4,6-dione

5-乙基-6-甲基嘧啶-2,4-二醇