Synonyms: ETHYL 3-[(2-ETHOXY-2-OXOETHYL)THIO]-4-OXO-4,5,6,7-TETRAHYDROBENZO[C]THIOPHENE-1-CARBOXYLATE;ETHYL 3-(ETHOXYCARBONYLMETHYLTHIO)-4-OXO-4,5,6,7-TETRAHYDROBENZO(C)THIOPHENE-1-CARBOXYLATE;ethyl 3-[(2-ethoxy-2-oxoethyl)thio]-4-oxo-4,5,6,7-tetrahydrobenzo[c]thiophene-1-carb