Direct Synthesis of ESBO Derivatives‐ 18 O Labelled with Dioxirane

This work addresses a new approach developed in our laboratory, consisting in the application of isolated dimethyldioxirane (DDO, 1a ) labelled with 18 O for synthesis of epoxidized glyceryl linoleate (Gly‐LLL, 2 ). We expect that this work could contribute in improving analytical methods for the determination of epoxidized soybean oil (ESBO) in complex food matrices by adopting an 18 O‐labelled‐epoxidized triacylglycerol as an internal standard.