3-chlorosulfonyl-thiophene-2-carboxylic acid chloride

Thieno[2,3-d]isothiazol-3(2H)-one 1,1-dioxide

methyl 2-(1,1-dioxido-3-oxothieno[2,3-d]isothiazol-2(3H)-yl)acetate

3-磺酰氨基乙酸甲酯-2-噻吩甲酸甲酯