4-hydroxy-6,7-dihydrobenzo[b]thiophene-5-carbonitrile

(4-bromo-2-cyano-phenylsulfanyl)-acetic acid

5-氯苯并[b]噻吩

5-bromo-benzo[b]thiophen-3-ol

5-溴-1-苯并噻吩-2-羧酸