4',7-Dimethoxy-5-Hydroxyflavone 98% (CAS: 5128-44-9): A High-Purity Flavonoid for Research, Analysis & Ingredient Development December 2025 Introduction 4',7-Dimethoxy-5-Hydroxyflavone (CAS: 5128-44-9) is a naturally occurring flavonoid found in several botanical species. With its well-defined molecular structure and high analytical value, this compound has become a preferred standard in phytochemistry, flavonoid research, and ingredient development. At Nanjing Spring & Autumn Biological Engineering Co., Ltd., we supply 4',7-Dimethoxy-5-Hydroxyflavone ≥98% (HPLC), manufactured under strict quality control with full supporting documentation. This research-grade material is ideal for universities, laboratories, cosmetic ingredient developers, and natural product research institutions. What Is 4',7-Dimethoxy-5-Hydroxyflavone? 4',7-Dimethoxy-5-Hydroxyflavone is a polymethoxyflavone featuring two methoxy groups and one hydroxyl group, contributing to its stable chemical properties and suitability for advanced analytical and structural studies. This compound is commonly applied in: Natural product identification and quantification Reference standard preparation for analytical testing Quality control of botanical extracts Flavonoid comparison studies and ingredient characterization R&D formulation and process development Our product is strictly intended for scientific research, laboratory analysis, and formulation development, not for direct consumption or medical applications. Chemical Information Item Detail Product Name 4',7-Dimethoxy-5-Hydroxyflavone CAS Number 5128-44-9 Molecular Formula C??H??O? Molecular Weight 298.29 g/mol Appearance Yellow to light-yellow crystalline powder Purity ≥98% (HPLC) Botanical Origin Plant-derived flavonoid Product Characteristics High Research-Grade Purity Each batch is verified via HPLC to ensure ≥98% purity with clear impurity profiles suitable for analytical use. Natural Botanical Origin This flavonoid is extracted and purified from plant materials through controlled processes to ensure stable quality and reproducibility. Stable & Convenient for Laboratory Use The product features a fine crystalline texture and is stored at 2–8°C, protected from light, ensuring long-term stability. Complete Documentation Provided All shipments include: Certificate of Analysis (COA) HPLC Chromatogram MS and NMR Data MSDS Technical Data Sheet (TDS) Applications in Research and Industry 1. Phytochemical Research As a structurally relevant flavonoid, 4',7-Dimethoxy-5-Hydroxyflavone is widely used in natural product chemistry, flavonoid profiling, and structural elucidation studies. 2. Analytical Method Development Ideal for establishing and validating analytical methods including: HPLC LC-MS/MS UV-Vis quantification Chromatographic fingerprinting 3. Botanical Extract Standardization Used as a marker compound or quality control standard in evaluating plant extracts rich in polymethoxyflavones. 4. Cosmetic Ingredient Screening Serves as a research ingredient for evaluating plant-based raw material characteristics, formulation behavior, and stability. Technical Specifications Parameter Specification Purity ≥98% (HPLC) Melting Point 180–185°C (typical range) Solubility Soluble in DMSO, ethanol Storage 2–8°C, protected from light Shelf Life 36 months Packaging Options Packaging Size Recommended Use 10 g Analytical or small-scale research 25 g Laboratory research projects 100 g Pilot-scale R&D 500 g – 1 kg Industrial formulation research Each batch is packed in moisture-protective, sealed containers to ensure stability during transport and storage. Why Choose Nanjing Spring & Autumn Biological Engineering Co., Ltd.? 1. Strict Quality Assurance All materials undergo comprehensive in-house and third-party testing to guarantee consistent purity and analytical reliability. 2. Full Technical Support and Documentation We provide complete data packages including COA, HPLC, MS, NMR, and safety documentation. 3. Stable Global Supply Our facility maintains long-term stock and efficient production capacity for uninterrupted supply. 4. Custom Packaging & Bulk Support We accommodate small trial quantities as well as large R&D or industrial-level orders. 5. Worldwide Shipping Capability International customers benefit from compliant export documentation and temperature-controlled packaging where required. Conclusion 4',7-Dimethoxy-5-Hydroxyflavone (CAS: 5128-44-9) is a valuable research-grade flavonoid widely used in natural product chemistry, botanical analysis, and ingredient development. With ≥98% purity, reliable quality, and full analytical documentation, Nanjing Spring & Autumn Biological Engineering Co., Ltd. is committed to supporting global research and industrial partners requiring premium-grade natural compounds. For quotations, technical files, or sample requests, please contact us anytime.