Involatile new compounds, amarinethiocyanate and its three derivants, have been characterized by TOF-SIMS. Protonated molecules and silver-cationized molecules have been detected with high intensities, while some fragments with structural characteristics have also been affirmed by comparison of these spectra. The Fragmentation path of these compounds under the bombardment of ions have also been discussed. The structural identification of these compounds have been supported by the study.

Key words: IMIDAZOLE P, HETEROCYCLIC COMPOUNDS, THIOCYANIC ACID P, TIME-OFF FLIGHT MASS SPECTROMETRY