Mass spectrometric study on O(S)-alkyl N,N-dimethylamino alkylphosphonates (alkylphosphonothiolates) for Chemical Weapons Convention verification purposes

► Modified microsynthesis of O(S)-alkyl N,N-dimethylamino alkylphosphonates (alkylphosphonothiolates) which are included in schedule 2 of Chemical Weapons Convention (CWC) annex of chemicals, is reported. ► Their electron impact mass spectra with possible fragmentation routes are also investigated by MS/MS experiments, fragment ions of deuterated analogs and energy calculations. ► These data could be useful for successful detection and identification the CWC-related chemicals in real sample or during OPCW proficiency tests.