5-(((2-(methylthio)ethyl)amino)methyl)thieno[2,3-b]thiophene-2-sulfonamide

thieno[2,3-b]thiophene-5-carbaldehyde

Methyl thieno[2,3-b]thiophene-2-carboxylate

methyl <(3-formylthiophene-2-yl)thio>acetate

3-(1,3-二氧戊环-2-基)噻吩