Evidence for the probable presence of sulfur‐containing fatty acids as minor constituents in canola oil

Three isomeric epithio stearic acids have been concentrated as possible minor sulfur‐bearing components of unprocessed canola oil. Chromatographic and mass spectral evidence is presented in support of these novel fatty acid structures, tentatively identified as isomeric 9, 12; 8, 11; and 7, 10 epithio stearic acids, each with a methyl substituent on the ring.