methyl 2-[(2-phenylsulfanylacetyl)amino]thiophene-3-carboxylate 2-[[1-oxo-2-(phenylthio)ethyl]amino]-3-thiophenecarboxylic acid methyl ester 2-[[2-(phenylthio)acetyl]amino]thiophene-3-carboxylic acid methyl ester methyl 2-(2-phenylsulfanylethanoylamino)thiophene-3-carboxylate ZINC04496672