5-Sulfamoyl-thieno[2,3-b]thiophene-2-carboxylic acid bis-(2-hydroxy-ethyl)-amide

5-{N-[N',N'-Bis(2-Methoxyethyl)aminoethyl]carbamoyl}-thieno[2,3-b]thiophene-2-sulfonamide

3-acetamidomethyl-2,3-dihydrothieno<2.3-b>thiophene