38322-69-9
ethyl 6-chloro-4-oxochromene-2-carboxylate
→
~59%
5006-45-1
6-氯-4-氧代-4H-色烯-2-羧酸
880142-59-6
diethyl (Z)-2-(4-chlorophenoxy)-2-butenedioate
24355-83-7
(Z)-2-(4-chlorophenoxy)but-2-enedioic acid