4,5-Dihydro-4-acetamido-5-methyl-5-propyl-4H-thieno[2,3-b]thiophene-2-sulfonamide-6,6-dioxide 生成 4,5-Dihydro-4-ethylamino-5-methyl-5-propyl-4H-thieno[2.3-b]thiophene-2-sulfonamide-6,6-dioxide β-isomer 、
4,5-dihydro-4-ethylamino-5-methyl-5-propyl-4H-thieno[2,3-b]thiophene-2-sulfonamide-6,6-dioxide