1,3-二甲基-6-氨基脲嘧啶

溶剂黄93

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

1,3-dimethyl-8H-pyrido[2,3-d]pyrimidine-2,4,7-trione