Methanesulfonic acid75-75-2100 % similar Eaton's reagent39394-84-860 % similar Pyridine methanesulfonate39879-60-257 % similar 2-Azabicyclo[3.1.0]hexane-3-carboxamide, (1S,3S,5S)-, methanesulfonate (1:1)709031-45-835 % similar Betahistine mesylate54856-23-433 % similar 6-Hydroxy-2-naphthimidamide methanesulfonate salt82957-06-032 % similar Methylsulfonylmethane67-71-031 % similar Sulfuric acid7664-93-931 % similar