1,3-二甲基乳清酸

5-氯2,6-二羟基-4-嘧啶羧酸甲酯

2,6-二氯嘧啶-4-甲酸甲酯

N-butyl-2,6-dioxo-3H-pyrimidine-4-carboxamide

methyl 5-iodo-2,4-dioxo-1H-pyrimidine-6-carboxylate