3-O-Methylquercetin
Synonym(s):5,7,3′ ,4′ -Tetrahydroxy-3-methoxyflavone;Quercetin 3-O-methyl ether
- CAS NO.:1486-70-0
- Empirical Formula: C16H12O7
- Molecular Weight: 316.26
- MDL number: MFCD00210588
- EINECS: 200-258-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-03-13 23:13:44
What is 3-O-Methylquercetin?
Description
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.
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.
The Uses of 3-O-Methylquercetin
A metabolite of the flavanoid Quercetin (Q509500) with inhibitory activity on lipopolysaccharide-induced activation of macrophage U937 cells.
What are the applications of Application
3-O-Methyl Quercetin is A metabolite of the flavanoid Quercetin (sc-206089)
Definition
ChEBI: A tetrahydroxyflavone having the 4-hydroxy groups located at the 3'- 4'- 5- and 7-positions as well as a methoxy group at the 2-position.
Biological Activity
3-O-Methylquercetin isolated from the herbs of Croton cascarilloides. It is a selective and competitive PDE3/PDE4 inhibitor,and inhibits PDE3 than PDE4 with a low K(m) value; it inhibits total cAMP- and cGMP-phosphodiesterase (PDE) of guinea pig trachealis at low concentrations.
Biochem/physiol Actions
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.
Properties of 3-O-Methylquercetin
| Melting point: | 275 °C |
| Boiling point: | 643.0±55.0 °C(Predicted) |
| Density | 1.69±0.1 g/cm3(Predicted) |
| solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. |
| form | powder |
| pka | 6.31±0.40(Predicted) |
| color | Yellow |
| BRN | 324509 |
| Stability: | Hygroscopic |
Safety information for 3-O-Methylquercetin
| Signal word | Danger |
| Pictogram(s) |
![]() Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H301:Acute toxicity,oral |
| Precautionary Statement Codes |
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
Computed Descriptors for 3-O-Methylquercetin
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