Rhamnetin
Synonym(s):β-Rhamnocitrin;3,3′,4′,5-Tetrahydroxy 7-methoxyflavone;7-Methoxyquercetin;7-Methylquercetin;Quercetin 7-methyl ether
- CAS NO.：90-19-7
- Empirical Formula: C16H12O7
- Molecular Weight: 316.26
- MDL number: MFCD00016931
- EINECS: 201-974-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-22 18:57:36
What is Rhamnetin?
The Uses of Rhamnetin
O-Methylated metabolite of the flavanoid Quercertin (Q509500) with antioxidant activity.
What are the applications of Application
Rhamnetin is an O-methylated flavonol 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.]
Properties of Rhamnetin
| 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) |
| form | Solid |
| form | neat |
| color | Light Yellow to Dark Yellow |
| BRN | 47741 |
| Stability: | Hygroscopic |
| CAS DataBase Reference | 90-19-7(CAS DataBase Reference) |
Safety information for Rhamnetin
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Rhamnetin
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