1-Methylcyclopropanesulfonamide669008-26-8100 % similar tert-Butylsulfonamide34813-49-550 % similar N-tert-Butyl-1-methylcyclopropane-1-sulfonamide669008-25-739 % similar 1,1,1-Trifluoromethanesulfonamide421-85-238 % similar