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Hydroxytyrosol

Hydroxytyrosol

IUPAC name	4-(2-Hydroxylethyl)-1,2-benzenediol
Other names	3-Hydroxytyrosol, 3,4-dihydroxyphenylethanol
Identifiers
CAS number	10597-60-1
SMILES	Oc1ccc(CCO)cc1O
Properties
Molecular formula	C₈H₁₀O₃
Molar mass	154.16 g/mol
Appearance	Clear, colorless liquid
Solubility in water	5 g/100 ml (25°C)
Hazards
MSDS	External MSDS
Main hazards	Irritant, flammable
Flash point	15°C
Related Compounds
Related alcohols	ethanol, phenol, tyrosol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Hydroxytyrosol is a phytochemical. It has antioxidant properties. After gallic acid, hydroxytyrosol is believed to be one of the most powerful antioxidants; it's capacity is double that of quercetin and more than 3 times that of epicatechin.

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Hydroxytyrosol is found in olive oil in the form of its elenolic acid ester oleuropein and, especially after degradation, in its plain form. Both compounds, along with oleocanthal, are responsible for the bitter taste of extra virgin olive oil. The wastewaters generated during olive processing contain a high levels hydroxytyrosol, most of which can be recovered to produce hydroxytyrosol extracts.

Studies by Visioli et al (2000) showed that a low dose of hydroxytyrosol reduces the consequences of sidestream smoke-induced oxidative stress in rats.