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Rhamnetin

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Rhamnetin Basic information

Product Name:
Rhamnetin
Synonyms:
  • 7-methoxyquercetin
  • 7-o-methylquercetin
  • beta-rhamnocitrin
  • c.i.75690
  • 3,3,4,5-TETRAHYDROXY-7-METHOXYFLAVONE TECH GRADE
  • RHAMNETIN WITH HPLC
  • 2-(3,4-Dihydroxyphenyl)-3,5-dihydroxy-7-methoxy-4H-1-benzopyran-4-one
  • 7-Methoxyquercetin
CAS:
90-19-7
MF:
C16H12O7
MW:
316.26
EINECS:
201-974-1
Product Categories:
  • standard material,plant extracts
  • Inhibitors
  • Aromatics
  • Intermediates & Fine Chemicals
  • Metabolites & Impurities
  • Pharmaceuticals
  • Flavanols
  • Heterocycles
Mol File:
90-19-7.mol
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Rhamnetin Chemical Properties

Melting point:
293-296°C (dec.)
Boiling point:
375.7°C (rough estimate)
Density 
1.3347 (rough estimate)
refractive index 
1.4790 (estimate)
storage temp. 
2-8°C
solubility 
DMSO (Slightly), Methanol (Slightly, Heated)
pka
6.15±0.40(Predicted)
color 
Light Yellow to Dark Yellow
BRN 
47741
Stability:
Hygroscopic
LogP
2.580 (est)
CAS DataBase Reference
90-19-7(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36/37
WGK Germany 
3
RTECS 
LK8748000
F 
3-10

MSDS

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Rhamnetin Usage And Synthesis

Uses

O-Methylated metabolite of the flavanoid Quercertin (Q509500) with antioxidant activity.

Definition

ChEBI: A monomethoxyflavone that is quercetin methylated at position 7.

Purification Methods

Crystallise rhamnetin from EtOH (m 292-293o), aqueous EtOH (m 294-296o) or MeOH (m 290-294o). or Me2CO/MeOH. [Kuhn & Low Chem Ber 77 211 1944, Jurd J Am Chem Soc 80 5531 1958.] The tetra-acetate has m 189-190o (from Me2CO/MeOH). [Beilstein 18 H 245, 18 II 237, 18 III/IV 3474.]

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