MASS-SPECTRA OF 4,4-DIMETHYLOXAZOLINE DERIVATIVES OF OXOOCTADECANOIC ACIDS

The mass spectrometrical fragmentation patterns of the 4,4-dimethyloxa zoline derivatives (DMOX) of the studied oxo fatty acids are easily to understand. The oxo group positions can be assigned unequivocally. Th e spectra are similar to those of the corresponding pyrrolidide deriva tives. Since DMOX derivatization proofed to be good for the GC-MS anal ysis of epoxy fatty acids as well, the method could be interesting for studies on oxidized fatty acids, as well.