Fisetin

  • Cotinine
  • 3,3 ', 4' ,7- Tetrahydroxyflavon
  • 5 - Desoxyquercetin
  • 2 - ( 3,4- dihydroxyphenyl) - 3,7- dihydroxychromen -4-one (IUPAC)
  • C. I. Natural Brown 1

Yellow needles

Fixed

330 ° C ( decomposition)

  • Insoluble in water
  • Soluble in ethanol

180 mg · kg -1 ( LD50, mouse, i.v.)

Template: Infobox chemical / molecular formula search available

Fisetin is a yellow dye, as part of the oxidation product of the Fisetinidins to the group of flavonols and thus represents a derivative of chromene.

He comes in Smoketree (also Fisetholz, hence the name) before; from its Latin name Cotinus coggygria or Rhus cotinus the alternative name cotinine derived.

Properties

Dilute solutions of the substance in ethanolic sodium hydroxide show a dark-green fluorescence.

Biological Effects

Fisetin is slightly toxic and should have a mutagenic effect. It also reduces the toxicity of aflatoxins.

A study by P. Maher et al. shows that fisetin promotes the long-term memory.

CAS registry number PubChem Chemical classification
335854
de