4,4-Dimethyl-6-sulfamoyl-hexanoic acid

3,3-Dimethyl-5-sulfamoyl-pentanoic acid

methyl 5-aminosulfonyl-3,3-dimethylvalerate

4-Iodo-3,3-dimethyl-butane-1-sulfonic acid 1-dimethylamino-meth-(E)-ylideneamide

methyl 6-aminosulfonyl-4,4-dimethylhexanoate