4-(2-Hydroxyethyl)benzene-1,2-diol3,4-Dihydroxyphenethyl alcoholDihydroxyphenylethanol3,4-dihydroxyphenolethanol (3,4-DHPEA)2-(3,4-Dihydroxyphenyl)ethyl AlcoholHydroxytyrosol3,4-dihydroxyphenylethanol (DOPET)Homoprotocatechuyl Alcohol2-(3,4-Dihydroxyphenyl)ethanol2-(3,4-Di-hydroxyphenyl)-ethanol (DHPE)β-(3,4-Dihydroxyphenyl)ethanol3,4-DHPEA2-(3,4-Dihydroxyphenyl)ethanolDOPET3,4-Dihydroxyphenethyl alcohol3-Hydroxytyrosol3-HydroxytyrosolHydroxy Tyrosol (>85%)4-(2-Hydroxyethyl)-1,2-benzenediol4-(2-Hydroxyethyl)benzene-1,2-diol3,4-dihydroxyphenylethanoldopethydroxytyrosol