Rhamnetin is an

O-methylated flavonol The O-methylated flavonoids or methoxyflavonoids are flavonoids with methylations on hydroxyl groups ( methoxy bonds). O-methylation has an effect on the solubility of flavonoids. Enzymes O-methylated flavonoids formation implies the presence of sp ...

, a type of chemical compound. It can be isolated from

clove Cloves are the aromatic flower buds of a tree in the family Myrtaceae, ''Syzygium aromaticum'' (). They are native to the Maluku Islands (or Moluccas) in Indonesia, and are commonly used as a spice, flavoring or fragrance in consumer products, ...

s. The structure of the molecule was discovered by Austrian chemist

Josef Herzig Josef Herzig (25 September 1853 – 4 July 1924) was an Austrian chemist. Herzig was born in Sanok, Galicia, which at that time was part of Austria-Hungary. Herzig went to school in Breslau until 1874, started studying chemistry at the Unive ...

(1853–1924).

Glycosides

Rhamnetin is the aglycone of

xanthorhamnin Xanthorhamnin is a chemical compound. It can be isolated from buckthorn berries (''Rhamnus catharticus''). The aglycone of xanthorhamnin is rhamnetin Rhamnetin is an O-methylated flavonol, a type of chemical compound. It can be isolated from cl ...

. O-methylated flavonols Catechols {{Aromatic-stub