98335-26-3
4-amino-2-ethylsulfanyl-pyrimidine-5-carboxylic acid amide
+
105-58-8
碳酸二乙酯
→
7403-28-3
2-ethylsulfanyl-8H-pyrimido[4,5-d]pyrimidine-5,7-dione
16462-29-6
2-硫乙基-4-氨基-5-氰基嘧啶