5-chloro-3,4-dihydro-2H-pyran

4-氯-3-乙氧基-2-丁烯酸乙酯

ethyl 4-chloro-3,3-diethoxybutanoate

ethyl 4,5,6,7-tetrahydro-1H-indole-2-carboxylate

1-(5-氯-2-羟基苯基)-1,3-丁二酮