text: MsO may be prepared by the dehydration of methanesulfonic acid with phosphorus pentoxide.
  :PO + 6 CHSOH → 3 (CHSO)O + 2 HPO
  MsO can be purified by distillation under vacuum (distillation of a solid) or by recrystallization from Methyl tert-butyl ether/toluene.