6-氯-1,3-二甲基脲嘧啶

溶剂黄93

6-氨基-1,3-二甲基-2,4-二氧代-1,2,3,4-四氢嘧啶-5-甲醛

5,7-dimethyl-[1,2]oxazolo[3,4-d]pyrimidine-4,6-dione

1,3,7,9-tetramethyl-1H,9H-pyrido[2,3-d,6,5-d']dipyrimidine-2,4,6,8-tetraone