113-00-8
胍
+
52942-64-0
diethyl (2Z)-2-(ethoxymethylidene)-3-oxobutanedioate
→
62328-20-5
diethyl 2-aminopyrimidine-4,5-dicarboxylate
6344-81-6
2-amino-6,7-dihydropyrimido[4,5-d]pyridazine-5,8-dione