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January 2026
5,7-Dimethoxyflavone (CAS: 21392-57-4), also known as Chrysin Dimethyl Ether or Pinostrobin Dimethyl Ether, is a naturally occurring methoxylated flavonoid found in various plant sources. Owing to its well-defined chemical structure and favorable stability, it is widely used in flavonoid research, analytical studies, and ingredient development.
At Nanjing Spring & Autumn Biological Engineering Co., Ltd., we supply 5,7-Dimethoxyflavone ≥98% (HPLC) with strict quality control and complete technical documentation. Our product is intended for scientific research, laboratory analysis, and industrial R&D applications, serving customers in the pharmaceutical research, cosmetic raw material, and natural product research fields worldwide.
5,7-Dimethoxyflavone is a methoxylated flavone characterized by two methoxy groups located at the 5- and 7-positions of the flavonoid backbone. This structural feature contributes to its chemical stability, making it suitable for analytical identification, comparative flavonoid studies, and formulation-related research.
Flavonoid profiling and identification
Reference material for analytical testing
Comparative studies of methoxylated flavones
Quality evaluation of plant-derived extracts
Ingredient research and formulation development
⚠️ This product is strictly intended for scientific research, laboratory analysis, and ingredient R&D.
It is not intended for direct consumption, food use, or medical applications.
| Item | Detail |
|---|---|
| Product Name | 5,7-Dimethoxyflavone |
| CAS Number | 21392-57-4 |
| Molecular Formula | C₁₇H₁₄O₄ |
| Molecular Weight | 282.29 g/mol |
| Appearance | Light yellow to yellow powder |
| Purity | ≥98% (HPLC) |
| Source | Plant-derived flavonoid |
Each batch of 5,7-Dimethoxyflavone is tested by HPLC to ensure ≥98% purity, providing consistency and reliability for analytical and R&D use.
Manufactured from botanical sources through controlled purification processes to ensure batch-to-batch reproducibility.
A fine powder with good stability when stored in a cool, dry environment, protected from light—suitable for routine laboratory handling and formulation studies.
Every shipment is accompanied by a comprehensive documentation package, including:
Certificate of Analysis (COA)
HPLC Chromatogram
MS / NMR Data (available upon request)
MSDS
Technical Data Sheet (TDS)
Used in the structural study and comparison of methoxylated flavonoids from plant sources.
Suitable as a reference compound for:
HPLC
LC-MS/MS
UV-Vis spectroscopy
Chromatographic method validation
Applied as a marker compound in the quality assessment and profiling of flavonoid-containing plant extracts.
Utilized in cosmetic raw material research to assess formulation compatibility, stability, and behavior within plant-based ingredient systems.
| Parameter | Specification |
|---|---|
| Purity | ≥98% (HPLC) |
| Appearance | Light yellow to yellow powder |
| Solubility | Soluble in DMSO, ethanol |
| Storage | Cool, dry place, protected from light |
| Shelf Life | 36 months |
| Packaging Size | Recommended Use |
|---|---|
| 10 g | Analytical or preliminary research |
| 25 g | Laboratory research projects |
| 100 g | Pilot-scale R&D |
| 500 g – 1 kg | Industrial formulation research |
All products are packed in sealed, moisture-protective containers to ensure stability during transportation and storage.
Comprehensive in-house testing ensures consistent quality and analytical reliability.
COA, HPLC data, MSDS, and technical documents are available to support research and compliance needs.
Professional manufacturing capacity and inventory management ensure long-term global supply.
From gram-level samples to kilogram-scale quantities, customized packaging is available.
Experienced export handling and international logistics support global customers efficiently.
For quotations, samples, or technical documents for 5,7-Dimethoxyflavone (CAS: 21392-57-4),
please contact our sales team.
Nanjing Spring & Autumn Biological Engineering Co., Ltd.
Website: www.cqherb.com
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