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. 2021 Aug 25;10(9):1348. doi: 10.3390/antiox10091348

Figure 1.

Figure 1

Chemical structures of the tested compounds. Hydroxytyrosol (HT) and derivatives: hydroxytyrosyl acetate (HT-Ac), ethyl hydroxytyrosyl ether (HT-Et), nitrohydroxytyrosol (NO2HT), nitrohydroxytyrosyl acetate (NO2HT-Ac), and ethyl nitrohydroxytyrosyl ether (NO2HT-Et).