2-(2-Phenylacetamido)-4,5,6,7-tetrahydrobenzo(b)thiophene-3-carboxylic acid ethyl ester 5-18-12-00221 (Beilstein Handbook Reference) 52535-69-0 BENZO(b)THIOPHENE-3-CARBOXYLIC ACID, 4,5,6,7-TETRAHYDRO-2-(2-PHENYLACETAMIDO)-, BRN 4734604 Benzo(b)thiophene-3-carboxylic acid, 4,5,6,7-tetrahydro-2-(2-phenylacetamido)-, ethyl ester