p. 1805 - 1818
(2007/10/02)5-(2-dioxolanyl)thieno<2,3-b>thiophene-2-sulfonamide
5-[1,3]Dioxolan-2-yl-thieno[2,3-b]thiophene-2-sulfonyl chloride
methyl [3-(dioxolan-2-yl)-thiophen-2-ylthio]acetate
5-formylthieno<2,3-b>thiophene-2-sulfonamide
thieno<2,3-b>thiophene-2-carboxaldehyde ethylene glycol acetal