• esters
  • Mesylate esters are a group of organic compounds that share a common functional group with the general structure CH3SO2O-R, abbreviated MsO-R, where R is an organic substituent. (wikipedia.org)
  • salt
  • When modifying the International Nonproprietary Name of a pharmaceutical substance containing the group or anion, the correct spelling is mesilate (as in imatinib mesilate, the mesylate salt of imatinib). (wikipedia.org)