15837-45-3
6-amino-1-phenylpyrimidine-2,4-dione
+
615-79-2
乙酰丙酮酸乙酯
→
102233-00-1
ethyl 7-methyl-4-oxo-1-phenyl-2-sulfanylidenepyrido[2,3-d]pyrimidine-5-carboxylate