5,7-Dimethoxyflavone ≥98% (CAS: 21392-57-4): A High-Purity Flavonoid for Research, Analysis & Ingredient Development January 2026 Introduction 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. What Is 5,7-Dimethoxyflavone? 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. Typical research and industrial applications include: 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. Chemical Information Item Detail Product Name 5,7-Dimethoxyflavone CAS Number 21392-57-4 Molecular Formula C??H??O? Molecular Weight 282.29 g/mol Appearance Light yellow to yellow powder Purity ≥98% (HPLC) Source Plant-derived flavonoid Product Characteristics High Research-Grade Purity Each batch of 5,7-Dimethoxyflavone is tested by HPLC to ensure ≥98% purity, providing consistency and reliability for analytical and R&D use. Plant-Derived & Well-Characterized Manufactured from botanical sources through controlled purification processes to ensure batch-to-batch reproducibility. Stable & Laboratory-Friendly A fine powder with good stability when stored in a cool, dry environment, protected from light—suitable for routine laboratory handling and formulation studies. Complete Technical Documentation 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) Applications in Research and Industry 1. Flavonoid & Natural Product Research Used in the structural study and comparison of methoxylated flavonoids from plant sources. 2. Analytical Method Development Suitable as a reference compound for: HPLC LC-MS/MS UV-Vis spectroscopy Chromatographic method validation 3. Botanical Extract Evaluation Applied as a marker compound in the quality assessment and profiling of flavonoid-containing plant extracts. 4. Cosmetic Ingredient R&D Utilized in cosmetic raw material research to assess formulation compatibility, stability, and behavior within plant-based ingredient systems. Technical Specifications 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 Options 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. Why Choose Nanjing Spring & Autumn Biological Engineering Co., Ltd.? Strict Quality Control Comprehensive in-house testing ensures consistent quality and analytical reliability. Complete Technical Support COA, HPLC data, MSDS, and technical documents are available to support research and compliance needs. Stable & Reliable Supply Professional manufacturing capacity and inventory management ensure long-term global supply. Flexible Packaging Solutions From gram-level samples to kilogram-scale quantities, customized packaging is available. Worldwide Shipping 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.hzxybxg.cn