2-Amino-3-(ethoxycarbonyl)-4,5-tetramethylenethiophene; 2-Amino-3-carboethoxy-4,5-tetramethylenethiophene; 2-Amino-3-ethoxycarbonyl-4,5,6,7-tetrahydrobenzo[b]thiophene; 2-Amino-4,5,6,7-tetrahydro-3-ethoxycarbonylbenzothiophene; 2-Amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic Acid Ethyl Ster; 2-Amino-4,5,6,7-tetrahydrobenzothiophene-3-carboxylic Acid Ethyl Ster; Ethyl 2-Amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate; Ethyl 2-Amino-4,5,6,7-tetrahydrobenzothiophene-3-carboxylate; SC 99005