2-Acetylamino-3-ethoxycarbonyl-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene

1,3-环己二酮

氰乙酸乙酯

2-(2-Chloro-acetylamino)-7-oxo-4,5,6,7-tetrahydro-benzo[b]thiophene-3-carboxylic acid ethyl ester

2-Benzoylamino-3-ethoxycarbonyl-7-oxo-4,5,6,7-tetrahydrobenzothiophene