20845-80-1
1-chloro-4-phenylbutan-2-one
+
56830-58-1
2,5-二氨基-4,6-二羟基嘧啶盐酸盐
→
70080-77-2
2-amino-6-(2-phenylethyl)-3,7-dihydropyrimido[4,5-b][1,4]oxazin-4-one