7-Fluoro-4-hydroxycoumarin

ethyl 4-chlorobenzenesulfonate

(3-溴-吡啶-2-基)-乙酸乙酯

6-氯-4-羟基-3-甲基-2H-1-苯并吡喃-2-酮

1-benzyl-1,3,5-triazinane-2,4,6-trione