6921-66-0
4'-氯-2'-羟基苯乙酮
+
105-58-8
碳酸二乙酯
→
18735-81-4
7-chloro-4-hydroxychromen-2-one
88484-58-6
ethyl 2-(7-chloro-2-oxochromen-4-yl)oxyacetate