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Sigma-Aldrich

3-O-Methylquercetin

≥97% (HPLC)

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Synonym(s):
5,7,3′ ,4′ -Tetrahydroxy-3-methoxyflavone, Quercetin 3-O-methyl ether
Empirical Formula (Hill Notation):
C16H12O7
CAS Number:
1486-70-0
Molecular Weight:
316.26
Beilstein:
324509
MDL number:
MFCD00210588
PubChem Substance ID:
329769845
NACRES:
NA.32

Quality Level

100

Assay

≥97% (HPLC)

form

powder

SMILES string

COC1=C(Oc2cc(O)cc(O)c2C1=O)c3ccc(O)c(O)c3

InChI

1S/C16H12O7/c1-22-16-14(21)13-11(20)5-8(17)6-12(13)23-15(16)7-2-3-9(18)10(19)4-7/h2-6,17-20H,1H3

InChI key

WEPBGSIAWZTEJR-UHFFFAOYSA-N

Biochem/physiol Actions

3-O-Methylquercetin significantly inhibits cyclic adenosine monophosphate- (cAMP-) and cyclic guanosine monophosphate- (cGMP-) phosphodiesterase activity. It possess anti-inflammatory, bronchodilating properties and used in treatment of asthma. It suppresses the total inflammatory cells, tumor necrosis factor-α (TNF-α) and attenuates the production of interleukins.
3-O-Methylquercetin is a metabolite in flavone and flavonol biosynthesis. It is a naturally occurring compound present in various plants, and was shown to have potent anticancer-promoting, antioxidant, antiallergy, and antimicrobial activity, and showed strong anti-viral activity inhibition of tomato ringspot virus.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301

Precautionary Statements

P301 + P310

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Hyang Dok-Go et al.
Brain research, 965(1-2), 130-136 (2003-02-20)
The flavonoids quercetin, (+)-dihydroquercetin, and quercetin 3-methyl ether were isolated from the ethyl acetate fractions of the fruits and stems of Opuntia ficus-indica var. saboten. In the present study, we evaluated their protective effects against oxidative neuronal injuries induced in
L Van Puyvelde et al.
Journal of natural products, 52(3), 629-633 (1989-05-01)
3,5-Dihydroxy-6,7,8-trimethoxyflavone, 3-O-methylquercetin, and helichrysetin were isolated from the flowers of the Rwandese medicinal plant, Helichrysum odoratissimum. Because of inconsistencies of the mp of the latter chalcone, a synthesis of helichrysetin was developed. 3-O-Methylquercetin was shown to be an active principle
Mechanisms of suppression of nitric oxide production by 3-O-methylquercetin in RAW 264.7 cells
Jiang JS, et al.
Journal of Ethnopharmacology, 103(2), 281-287 (2006)
Clement K Ameho et al.
The Journal of nutritional biochemistry, 19(7), 467-474 (2007-10-02)
Dietary antioxidants interact in a dynamic fashion, including recycling and sparing one another, to decrease oxidative stress. Limited information is available regarding the interrelationships in vivo between quercetin and vitamin E. We investigated the antioxidant activity and metabolism of quercetin
C Angeloni et al.
Biochimie, 89(1), 73-82 (2006-10-19)
The aim of this study was to investigate the potential of quercetin and two of its "in vivo" metabolites, 3'-O-methyl quercetin and 4'-O-methyl quercetin, to protect H9c2 cardiomyoblasts against H(2)O(2)-induced oxidative stress. As limited data are available regarding the potential
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