According to the library of mass spectra the compounds with RT’s of 29.15 and 29.34 min had fragmentation patterns similar to those of p- and m-cresol. The distinct features of mass spectra were two dominant ions at m/z 107 > m/z 108. When comparing the retention times of these two compounds with corresponding characteristics of synthetic standards on a DB-Wax column, peaks with
an RT of 29.15 and 29.34 min represented p- and m-cresol, respectively.