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5-Hydroxy-3',4',6,7-tetramethoxyflavone 98% (CAS 21763-80-4) – High-Purity Polymethoxylated Flavonoid from Botanical Sources
5-Hydroxy-3',4',6,7-tetramethoxyflavone (CAS: 21763-80-4) is a naturally derived polymethoxylated flavone commonly found in citrus-related botanical sources. With ≥98% HPLC purity, this compound is widely used as a research-grade flavonoid reference for phytochemical analysis, chromatographic method development, and early-stage formulation research.
Supplied with complete documentation including COA, HPLC chromatogram, MS, and NMR data.
For laboratory and R&D use only.
Product Name :
5-Hydroxy-3',4',6,7-tetramethoxyflavoneCAS No. :
21763-80-4Appearance :
Yellow to light-yellow crystalline powderSpecification :
98%Product Name: 5-Hydroxy-3',4',6,7-tetramethoxyflavone
CAS No.: 21763-80-4
Molecular Formula: C₁₉H₁₈O₇
Molecular Weight: 358.34 g/mol
Appearance: Yellow to light-yellow crystalline powder
Specification: ≥98% (HPLC)
5-Hydroxy-3',4',6,7-tetramethoxyflavone is a naturally derived polymethoxylated flavone commonly isolated from citrus-related botanical sources.
It is widely used as a research-grade flavonoid reference compound in natural product chemistry, phytochemical profiling, and analytical method development.
With high purity and stable physicochemical properties, this product is suitable for laboratory research, extraction studies, and early-stage formulation exploration.
Note: This product is intended for research and industrial R&D use only. Not for direct consumption or therapeutic applications.
≥98% purity verified by HPLC
Polymethoxylated flavone with defined structure
Plant-derived compound with consistent quality
Stable crystalline powder, suitable for long-term storage
Applicable for analytical reference and R&D formulation screening
Non-GMO, non-irradiated, no animal-derived components
| Parameter | Detail |
|---|---|
| Purity | ≥98% (HPLC) |
| Molecular Formula | C₁₉H₁₈O₇ |
| Molecular Weight | 358.34 g/mol |
| Appearance | Yellow to pale-yellow crystalline powder |
| Solubility | DMSO, Methanol, Ethanol; poorly soluble in water |
| Melting Point | 220–225°C |
| Chemical Class | Polymethoxylated flavone |
| Source | Botanical-derived |
| Storage | 2–8°C, sealed, light-protected |
| Shelf Life | 24–36 months |
Reference standard in flavonoid and polymethoxyflavone analysis
Used in phytochemical studies and botanical fingerprinting
Applied in HPLC / LC-MS method development
Raw material for laboratory-scale formulation screening
Ingredient for early-stage cosmetic formulation research
Botanical compound for nutraceutical prototype evaluation
Used in citrus flavonoid extraction and purification optimization
Disclaimer: Not approved as a food ingredient, cosmetic ingredient, or pharmaceutical API.
| Quantity | Packaging | Shelf Life |
|---|---|---|
| 5 g / 10 g | Amber glass vial | 24 months |
| 25 g | Aluminum foil pouch | 24 months |
| 100 g | HDPE bottle | 24 months |
| 500 g – 1 kg | Fiber drum / HDPE container | 24 months |
Storage Conditions:
Store at 2–8°C, tightly sealed, protected from moisture and light.
MS: Molecular ion consistent with C₁₉H₁₈O₇
FTIR: Characteristic flavone absorption bands
NMR: ¹H / ¹³C NMR data available upon request
HPLC chromatogram (UV detection)
Residual solvent analysis (GC)
Heavy metals controlled within standard limits (Pb, Cd, As, Hg)
≤500 g: Standard shipment
≥1 kg: Temperature-controlled shipment recommended
Certificate of Analysis (COA)
HPLC Report
MS / NMR Data
Material Safety Data Sheet (MSDS)
Technical Data Sheet (TDS)
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