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. Author manuscript; available in PMC: 2022 Nov 1.
Published in final edited form as: Prostaglandins Leukot Essent Fatty Acids. 2021 Oct 24;174:102357. doi: 10.1016/j.plefa.2021.102357

Figure 11-.

Figure 11-

2,2-dimethyl analog provides resistance to lipase catalyzed esterification. Molar masses of free acid and expected glyceryl ester product are below the structures. Total ion chromatogram (TIC; top) and mass spectra (bottom) for positive mode (panel A) and for negative mode (panel B). No glyceryl ester product was observed, only unreacted 2,2-dimethyl free acid and adducts were found: (m/z) 339.30 [M-H]− (panel A); (m/z) 358.30 [M+NH4]+, 379.23 [M+K]+ (panel B).