p. 2355 - 2363
(2007/10/03)p. 678 - 682
(2007/10/02)
methyl 3-<
methyl 3-<<<(methoxcarbonyl)methyl>amino>sulfonyl>-2-thiophenecarboxylate
methyl 4-hydroxy-2H-thieno<2,3-e>-1,2-thiazine-3-carboxylate 1,1-dioxide
3-chlorosulfonyl-thiophene-2-carboxylic acid chloride
2-(carbomethoxy)thiophene-3-sulfonyl chloride