Mass spectral data of the products identified from the gas-phase ozonolysis of terpinolene The identification of the reported terpinolene ozonolysis products was made using a ThermoFinnigan gas chromatograph with mass spectrometric detection (GC-MS) in electron impact (EI, 70eV) and negative chemical ionisation (CI(-), methane) modes following derivatisation using 14% BF 3 /MeOH. Five organic acids were identified as their corresponding methyl ester derivatives, as represented by

more »

... peaks 1-5, respectively. The EI and CI(-) mass spectral data of these peaks are shown in Fig. SP1 -SP5. Descriptions of the structure elucidation of these compounds are given in the main paper. Fig. SP1 GC/EI and CI(-)-MS spectra for P1, tentatively identified as methylated terpinolic acid (a).