Characterization of maitotoxin-4 (MTX4) using electrospray positive mode ionization high-resolution mass spectrometry and UV spectroscopy.

All these investigations on the characterization of MTX4 contribute to highlighting that MTX4 belongs to the same structural family of MTXs. However, to accomplish a complete structural elucidation of MTX4, an NMR-based study and LC/HRMSn investigation will have to be carried out.