CAS: 342789-81-5 Molecular Formula: C9H18N2O3S Molecular Weight (g/mol): 234.314 MDL Number: MFCD06798173 InChI Key: PUHVBRXUKOGSBC-UHFFFAOYSA-M Synonym: 1-butyl-3-methylimidazolium methanesulfonate,1-butyl-3-methylimidazolium mesylate,acmc-20aowi,c4mim mesylate,basionics™ st 78,dsstox_cid_27888,dsstox_rid_82641,dsstox_gsid_47912,1-butyl-3-methylimidazolium methylsulfonate,1-n-butyl-3-methylimidazolium methanesulfonate PubChem CID: 11492381 IUPAC Name: 1-butyl-3-methylimidazol-3-ium;methanesulfonate SMILES: CCCCN1C=C[N+](=C1)C.CS(=O)(=O)[O-]