Thermospray mass spectrometry of N‐methylcarbamates

Abstract
The thermospray mass spectrometry (TSP/MS) of five N‐methylcarbamates is presented. This is the first time that ions other than [M + H]+ and [M + NH4]+ have been reported using positive TSP/MS. Protonation of ROCONHCH3 yields the [CH3NH2CO] ion, with formation of the ion–molecule adduct [ROCONHCH3 · CH3NH2CO] through elimination of CO from [CH3NH2CO], and the adduct [M + 75], [ROCONHCH3 · OCONH2CH3], is also obtained.