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3-Hydroxyflavone

    • Product Name 3-Hydroxyflavone
    • Alias 3-Hydroxy-2-phenyl-4H-1-benzopyran-4-one
    • Einecs 208-313-9
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    972343

    Chemical Name 3-Hydroxyflavone
    Molecular Formula C15H10O3
    Molecular Weight 238.24 g/mol
    Cas Number 577-85-5
    Appearance Yellow powder
    Melting Point 200-203°C
    Solubility Slightly soluble in water, soluble in ethanol and DMSO
    Density 1.359 g/cm³
    Structure Flavone backbone with a hydroxyl group at position 3
    Iupac Name 3-hydroxy-2-phenylchromen-4-one
    Uv Vis Absorption Maximum at ~370 nm
    Pubchem Cid 5280341

    As an accredited 3-Hydroxyflavone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 3-Hydroxyflavone, 5 grams, is supplied in a sealed amber glass vial with labeled hazard symbols and detailed chemical identification information.
    Shipping 3-Hydroxyflavone is typically shipped in tightly sealed containers to prevent contamination and moisture absorption. The package is labeled according to chemical safety regulations and transported under ambient conditions unless otherwise specified. Standard precautions should be followed to handle and store the chemical safely during transit. Documentation accompanies each shipment for regulatory compliance.
    Storage 3-Hydroxyflavone should be stored in a tightly closed container, protected from light and moisture, and kept in a cool, dry, and well-ventilated area. The recommended storage temperature is 2–8°C (refrigerated). Avoid exposure to heat, strong oxidizers, and incompatible materials. Clearly label the container and ensure it is kept away from sources of ignition and incompatible substances.
    Application of 3-Hydroxyflavone

    Applications of 3-Hydroxyflavone in Industrial Manufacturing

    As an established producer, we supply 3-Hydroxyflavone for advanced downstream manufacturing across several regulated sectors. Our technical team ensures strict batch-to-batch consistency for demanding applications in specialty chemicals, pharmaceuticals, dyes, analytical reagents, and food science.

    1. Fluorescent Probe Manufacturing for Molecular Biology

    Research and diagnostics companies use 3-Hydroxyflavone as a core fluorescent probe component for biomolecular detection and imaging applications. This compound forms the active fluorochrome in ratiometric sensors and live cell imaging dyes. Integrated during probe synthesis, it undergoes structural purification to achieve the narrow excitation and emission spectra required for confocal microscopy and high-throughput screening platforms. Consistent purity and spectral quality are critical for downstream reproducibility and calibration of laboratory diagnostics, ensuring compliance with analytical standards.

    Industry compliance standards

    • ISO 13485 Medical Devices Quality Management
    • OECD Good Laboratory Practice (GLP) Guidelines
    • USP General Chapter <1225> — Validation of Compendial Procedures
    • REACH Regulation EC No 1907/2006

    Typical usage ratio

    • 0.1–10% by weight in fluorescent probe formulations—optimized by desired emission intensity and matrix compatibility

    Downstream process integration

    • Incorporated at the synthesis/coupling stage with linker molecules
    • Subjected to chromatographic purification before formulation in aqueous or organic solvents
    • Final solution or lyophilized powder packaged under inert or anhydrous conditions

    Final product types

    • Cell imaging reagents (ratiometric dyes)
    • RNA/DNA oligonucleotide conjugates
    • Protein and enzyme activity probes
    • Microplate-based assay kits for biochemical analysis

    2. Pharmaceutical Intermediate in Flavonoid Synthesis

    Active pharmaceutical ingredient (API) manufacturers select 3-Hydroxyflavone as a crucial intermediate for synthesizing therapeutic flavonoid derivatives. These compounds include both investigational drugs and reference standards. During multi-step organic synthesis, process chemists functionalize and derivatize the flavone nucleus, requiring tightly controlled impurity profiles and compliance with ICH-Q7 GMP regulations. Our material supports selective phosphorylation, glycosylation, or alkylation reactions, yielding consistent results in kilo-lab and full-scale API production environments.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • EP, USP, JP Pharmacopoeia Specifications
    • FDA 21 CFR Part 210/211
    • ISO 9001:2015 Quality Management Systems

    Typical usage ratio

    • Varies: 1–3 molar equivalents relative to core scaffold, adjusted for target API yield and downstream derivatization efficiency

    Downstream process integration

    • Introduced in initial or mid-stage synthetic step with controlled addition
    • Solution-phase and solid-phase synthesis workflows
    • Subjected to in-process quality test for identity, purity, and residual solvents before final API isolation

    Final product types

    • Clinical trial batch APIs
    • Pharmaceutical reference standards
    • Semi-synthetic drugs containing flavonoid motifs
    • Impurity profiling standards

    3. Advanced Chemical Dye Formulation for Specialty Coatings

    Manufacturers of optical coatings and specialty textiles employ 3-Hydroxyflavone as a key molecule in the synthesis of photoactive dyes. This flavone derivative contributes high thermal stability and controlled photophysical properties for color-fast high-performance coatings. Integration occurs during dye formulation prior to casting or spraying operations. These coatings meet rigorous requirements for UV stability, optical density, and low migration under standardized aging protocols. Thorough batch testing and regulatory assessments ensure compliance for consumer and industrial product safety.

    Industry compliance standards

    • EN 71-3 Migration of Certain Elements (for coated toys and textiles)
    • ISO 105-B02 Color Fastness to Artificial Light
    • DIN EN ISO 9001 Quality Management for Coating Processes
    • TSCA Inventory Listing (for U.S. market goods)

    Typical usage ratio

    • 0.01–1% by weight in dye concentrates, finalized by achieving targeted absorbance or brightness index

    Downstream process integration

    • Pre-blending with binder resins and pigment dispersions
    • Addition at primary mixing prior to thin film application
    • Quality control via spectrophotometric color assessment and migration testing during scale-up

    Final product types

    • Photochromic exterior paints
    • UV-stable printing inks
    • Specialty textile coatings
    • Anti-counterfeiting marking systems

    4. Natural Antioxidant Standard in Food Analysis Laboratories

    Food testing laboratories rely on 3-Hydroxyflavone as a flavonoid standard to evaluate antioxidant profiles in plant-derived ingredients. As a reference chemical in spectrophotometric and HPLC assays, this material supports lab-developed testing procedures for quality control and labeling compliance in processed foods and dietary supplements. It enters the analytical workflow during calibration for total flavonoid content. Traceable, high-purity stocks enable laboratories to meet international test method criteria for repeatability and accuracy.

    Industry compliance standards

    • ISO/IEC 17025 General Requirements for Testing and Calibration Laboratories
    • AOAC Official Method 2011.24 (Flavonoid Quantification by HPLC)
    • GB 5009.237-2016 (Chinese National Standard for Flavonoid Content in Foods)
    • FDA 21 CFR Part 101 (Nutritional Labeling of Food)

    Typical usage ratio

    • 0.1–10 mg/L calibration solutions, adjusted for instrumentation sensitivity and sample concentration

    Downstream process integration

    • Dissolved in analytical-grade solvents during standard preparation
    • Loaded into autosamplers for HPLC or UV/Vis detection
    • Used to establish calibration curve for food matrix quantification workflows

    Final product types

    • Certified reference materials for laboratory distribution
    • Analytical kits for antioxidant profiling
    • Internal standards for food safety laboratories
    • Lab QA/QC validation resources

    5. Luminophore Source for Advanced Organic Electronics

    Electronics manufacturers integrate 3-Hydroxyflavone-based luminophores in organic light-emitting device formulations. These compounds contribute to high quantum yield and tunable emission properties essential for next-generation display panels and lighting systems. Incorporated into the organic semiconductor layer during thin film deposition, the raw material’s purity ensures defect-free films with consistent charge transport. Manufacturers require precise technical documentation and supply chain traceability to support device reliability and regulatory certification worldwide.

    Industry compliance standards

    • RoHS Directive 2011/65/EU (Restriction of Hazardous Substances in Electronic Equipment)
    • EN 62321 Determination of Certain Substances in Electrical and Electronic Products
    • ISO 14644 Cleanroom and Associated Controlled Environments
    • IPC-1752A Material Declaration Management Standard

    Typical usage ratio

    • 0.01–0.5% by weight in organic emitter layers, fine-tuned for required device efficiency and color balance

    Downstream process integration

    • Solution blending with polymer hosts before spin-coating or inkjet printing
    • Casting onto transparent substrates in inert-atmosphere production lines
    • Post-deposition annealing and optical inspection for uniformity

    Final product types

    • OLED display panels
    • Flexible lighting strips
    • Wearable device screens
    • Color conversion films for advanced visual devices
    Free Quote

    Competitive 3-Hydroxyflavone prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.

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    Certification & Compliance
    More Introduction

    Discovering Practical Value with 3-Hydroxyflavone

    Real Chemical Advances by Hands-On Manufacturers

    Direct experience sticks with you in the world of chemical manufacturing. Over decades in the lab and on the plant floor, one thing becomes clear: utility comes from understanding, not just packaging. 3-Hydroxyflavone is one of those names that draws more attention every year, especially among research chemists pushing fluorescence technology and biochemists mapping antioxidant pathways.

    Our long-standing work producing 3-Hydroxyflavone has shown its performance stands out under rigorous testing. The consistency batch-to-batch relies on in-house controlled synthesis and tailored purification steps, not just routine specifications. By handling every reaction, every filtration, every final step ourselves, we can rely on purity measures that remain dependable. Close attention to the properties that really matter, like actual HPLC retention behavior and UV-vis absorbance signature, has made all the difference—especially for researchers chasing subtle sensitivity and selectivity.

    What Makes 3-Hydroxyflavone Unique?

    Chemical research often circles back to certain scaffolds, and flavones prove unusually robust. 3-Hydroxyflavone, with its hydroxy group at the third position of the aromatic system, is recognized for a tight combination of structural stability and practical reactivity. Alongside the other isomers and related compounds, it occupies a distinct niche. Its tautomerization potential, hydrogen bonding pattern, and ability to form well-defined complexes have cemented 3-Hydroxyflavone’s place in analytical, biochemical, and photophysical research.

    Unlike more common substituted flavones, this hydroxy variant exhibits pronounced fluorescence under ultraviolet exposure, with a clear emission band near 540 nm. This emission responds predictably to solvent polarity and can act as a ratiometric probe in live-cell imaging or solution state studies. No two lots behave quite the same unless the underlying chemistry is tightly managed. We’ve seen even small changes in trace metals, minor byproducts, or evaporation techniques change quantum yield reproducibility. Direct manufacturer oversight matters here—the more hands-on the work, the less anyone runs into unwanted byproducts or photobleaching artifacts.

    As one of the core simple flavones, 3-Hydroxyflavone also chooses a different path from close cousins like quercetin or kaempferol. The single hydroxy group delivers a characteristic balance: reactive enough without shifting the structure too far toward instability or loss of planarity. For studies on cellular redox balance, oxidative stress, and molecular recognition, this structure proves direct and reliable. The lack of multiple competing sites for metal chelation cuts down on signal noise whether the goal is fluorescence microscopy, antioxidant profiling, or use as an intermediate in fine organic synthesis.

    Specifications: Beyond the Numbers

    Plenty of customers glance at standard details—molecular weight, melting point, basic purity numbers—when deciding between products. We always find value in repeating critical assessments in-house. For 3-Hydroxyflavone, actual purity never comes down to a single number. The control starts at raw materials, with each batch entering synthesis only after confirming feedstock quality. The product typically forms needle-like yellow crystals, with melting ranges from 154 to 156°C. Consistent HPLC traces show one sharp peak, and repeated UV spectrometry gives absorption at roughly 370 nm.

    The real work happens during the last stages. Even well-run textbook syntheses produce side-products, discolorations, or ambiguous UV-absorbing residues. Vigilance here remains key. We developed handling steps that keep the final product moisture-free, and avoid exposure to light and air as much as possible—this limits unwanted oxidation or dimer formation, both of which hit fluorescence performance. Instead of only referencing a certificate, we keep multiple retention standards and check actual emission under UV to make sure nothing slips. This is easier to do with manufacturing expertise in reach than depending on traders or middlemen with no access to the reaction vessel.

    How 3-Hydroxyflavone Shapes Research Use

    Most of the questions from laboratories focus on two areas: how consistently can the product be trusted, and what evidence supports the claimed performance? Analytical chemists, for example, frequently apply 3-Hydroxyflavone as an indicator in sophisticated metal ion assays. Its selectivity for various cations (and subtle shifts depending on microenvironment) can determine the success of an experiment. Any leftover residues or incomplete reactions introduce variability where there should be none. That’s why careful synthesis and full in-house chromatography on each lot matter so much.

    Another major user group works in fluorescence spectroscopy and imaging. 3-Hydroxyflavone brings unique properties compared to typical fluorophores like fluorescein or coumarins. The ESIPT (excited state intramolecular proton transfer) mechanism enables ratiometric measurements, so researchers can measure environmental polarity or proton gradients through emission shifts. Unlike generic dyes sourced without attention to byproducts, tightly controlled production means researchers get repeatable sensitivity, well-defined spectra, and no unexplained background emission. Real-world lab results support these claims and drive continuing trust in this molecule.

    In addition to its role as a probe, 3-Hydroxyflavone earns attention as a building block for new drug candidates, natural product analogs, and antioxidant efficacy studies. Its antioxidant power, positioned between simple phenols and highly functionalized flavonoids, allows for targeted cellular work without excessive interference. Those using enzymatic assays, especially those measuring peroxidase or superoxide dismutase activity, often select this simpler structure to avoid background absorbance overlap. Reliability batch after batch helps laboratories keep result quality high, avoiding the chase through foreign distributor paperwork and ambiguous batch histories.

    Hands-On Control: Differentiating the Manufacturer’s Approach

    Market demand has given rise to a crowd of intermediaries, resellers, and speculative brokers in fine chemicals. What sets a manufacturer apart lies in the persistent ability to adjust, refine, and correct—all guided by hands-on knowledge. With 3-Hydroxyflavone, the small differences from batch to batch cannot be managed by traders unfamiliar with the process. Having chemists and technicians monitoring outcomes during every key step, from the first condensation through final crystallization, drives future improvements in both yield and reproducibility.

    Manufacturing experience has pointed out pitfalls that buyers may never see. For instance, even minor shifts in pH during isolation can push the product towards unwanted colored impurities or off-odors, often ignored in raw data sheets. Gradual improvements—switching filtration systems, upgrading solvent purity, implementing inert-atmosphere stirrers—have cut down defect rates and increased usable product shelf life. None of these changes emerge in standard specifications, but they have long-range impact on the real-world usability of 3-Hydroxyflavone.

    We often receive back compound samples, sometimes from years ago, for side-by-side testing with new batches. This feedback loop builds a dataset unavailable to resellers. One clear trend: batches handled end-to-end in our own facilities retain expected performance, measured by actual lab assays, significantly longer than off-brand or repackaged material. Not waiting on outside schedules for retesting or shipping delays, we can pivot production to fix issues detected by real users, whether that means refining crystal drying techniques or upgrading glassware cleaning protocols.

    Comparing 3-Hydroxyflavone with Close Competitors

    The chemistry market offers a range of flavone derivatives, each with their own place. Selecting between close relatives often matters more than buyers expect. For example, 3,6-dihydroxyflavone shows greater polarity and a tendency for stronger metal ion binding, but sacrifices some of the emission specificity valued in pure 3-Hydroxyflavone. Compounds like quercetin, with multiple hydroxyl groups, show much higher antioxidant capacity but quickly run into stability and color variability issues under routine storage—making them less practical for high-precision work.

    In bioassays where a single parameter must be tracked, 3-Hydroxyflavone’s straightforward structure avoids confounding cross-reactions. Fewer functional groups mean less unexpected interference in both cell-based and solution state work. For custom probe development, the single hydroxy position allows straightforward modification without complex synthetic detours. Other isomers or more heavily decorated flavones often require protective groups and extra steps, which introduces cost and uncertainty. By keeping the core structure clean and simple, users avoid both synthetic headaches and confusing background signals in baseline measurements.

    We’ve supported groups working in metal chelation, antioxidant studies, and synthetic probe design. The consistent result: 3-Hydroxyflavone serves well as a direct reference or “null” compound, allowing researchers to compare modified derivatives with a neutral backbone. Its easy purification and low tendency towards rapid degradation set it apart from its more highly substituted cousins. By tightening reproducibility and minimizing unknowns, this flavone variant streamlines many types of research.

    Challenges and Solutions in Manufacturing

    Turning out high-purity 3-Hydroxyflavone brings persistent practical challenges, most often invisible to specialty distributors. Stirring and temperature control during synthesis impact particle aggregation and final yield. Unfiltered solvent residues contribute trace contaminants that only show up during fluorescence measurements, not basic purity checks. Occasional requests for sub-micron powder force us to expand our milling and sieving protocols, but with each added control step, repeatability grows stronger.

    Regulatory shifts have started to impact precursor sourcing. Certified traceability from the ground up now forms part of responsible manufacturing, and producers must be able to back up claims with more than just sales documentation. Auditors now regularly review raw chemical logs as well as batch processing controls—something never required by secondary traders. Responding to higher regulatory scrutiny, our teams document all material movements with digital records and, if needed, keep retained samples for cross-checking complaints that surface much later.

    Customer feedback, particularly from academic labs and pharmaceutical developers, has driven us to deploy updated drying and packaging protocols for 3-Hydroxyflavone. Fluctuations in humidity during handling may seem minor but quickly affect both texture and shelf-stability for highly crystalline compounds. By using sealed, desiccated containers and making routine re-tests available, we work to meet the rising standards directly requested by ongoing research partners. This hands-on, direct response closes the feedback loop in ways that abstract compliance targets never can.

    Applications Going Beyond Standard Reactions

    While many users rely on 3-Hydroxyflavone for classic fluorescence or as a model antioxidant, creative repurposing continues to emerge. Some analytical groups use it in supramolecular chemistry, assembling host-guest complexes with tuneable optical properties. Its robust photophysical signature means new uses appear as detection technologies improve. Synthetic biologists often turn to this compound as a backbone for producing “unnatural” natural products, testing biosynthetic pathways or engineering more robust antioxidants. The simple modification of the hydroxy group has planted 3-Hydroxyflavone at the edge of new medicinal and sensor chemistry.

    Our direct experience has shown that certain technologies, such as fluorescence lifetime imaging and time-gated spectroscopy, depend heavily on the small but critical differences between batches. Only a hard-won, end-to-end understanding allows consistent supply at the levels demanded. Pharmaceutical researchers rely on direct communication with the manufacturing team to confirm batch identity, track performance over time, and request small variations suited to specific projects. This responsive approach goes missing when buyers rely on bulk commodity channels.

    Maintaining Consistency and Reproducibility

    Every laboratory relies on a stream of dependable materials. As reproducibility crises ripple through science, materials with unpredictable impurity profiles or changing emission spectra lose value. Manufacturing responsibility begins long before packaging—each input, each reaction condition, and each environmental factor eventually impacts the final bottle someone places on their bench. Careful archiving of every variable, frequent in-process checks, and regular feedback cycles keep surprise deviations out of final shipments.

    To address growing interest in reproducible research, we support users by supplying detailed lot information, not just “meets minimum spec” assurances. Custom requests, such as providing larger crystal fragments for single-crystal X-ray studies, or micronized powders for solution work, guide our planning. Users working in fields as diverse as medical diagnostics, material science, and analytical research have found small modifications make their work easier—direct communication between manufacturer and end-user makes these optimizations feasible in reasonable time frames.

    Purity claims always come with exact data—NMR, IR, HPLC, UV-vis spectra all available on request for any batch. This transparency cuts through the generic language of commodity suppliers and supports longstanding user trust. If a customer discovers a novel application, or a potential limitation, direct collaboration helps build future solutions into the manufacturing process.

    Supporting Research Progress with Manufacturer-Driven Quality

    Changing research expectations mean suppliers must be ready to evolve. Two decades ago, research fluorophores served mainly academic curiosity. Now, precision in diagnostic, imaging, and pharmaceutical applications raises the bar. Material weaknesses show up faster, and only those with actual control over their process can step up to the challenge. By producing 3-Hydroxyflavone directly and handling every stage, we ensure feedback from the field comes straight to the manufacturing floor.

    Big ideas in science often rest on tiny differences, especially for advanced spectroscopic methods. The only way to support progress is to supply chemical products crafted for reliability, batch by batch, and to keep transparency at the core of operations. Working directly with research teams and supporting custom modifications, scheduling urgent syntheses, or fine-tuning purification steps, we adapt to each new challenge as it comes. This approach simply grows the capabilities and confidence of the laboratories that rely on our products for groundbreaking results.

    Manufacturing builds credibility one step at a time. From exacting synthesis management to user-focused documentation, the responsibility to support scientific advancement always circles back to the choices made in the plant and the lab. With each batch of 3-Hydroxyflavone, direct experience allows us to refine, respond, and remain a trusted partner to research and development worldwide.