40424-48-4
5-amino-6-methoxy-1H-pyrimidine-4-thione
+
70-11-1
2-溴苯乙酮
→
1981-06-2
4-methoxy-6-phenyl-5H-pyrimido[4,5-b][1,4]thiazine
32002-69-0
ethyl β-chloro-β-benzoylpyruvate