Methyl fluorosulfonate421-20-5100 % similar Dimethyl sulfate77-78-142 % similar Methyl methanesulfonate66-27-338 % similar Methyl trifluoromethanesulfonate333-27-738 % similar Methyl chlorosulfate812-01-136 % similar Methyl ethanesulfonate1912-28-333 % similar Sodium methyl sulfate512-42-532 % similar Potassium monomethylsulfate562-54-932 % similar