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Tetrahydro-4H-Pyran-4-One

    • Product Name Tetrahydro-4H-Pyran-4-One
    • Alias Tetronal
    • Einecs 212-030-7
    • 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

    716245

    Chemical Name Tetrahydro-4H-Pyran-4-One
    Molecular Formula C5H8O2
    Molecular Weight 100.12 g/mol
    Cas Number 1003-22-1
    Appearance Colorless to pale yellow liquid
    Boiling Point 175-177°C
    Melting Point -35°C
    Density 1.073 g/cm³ at 25°C
    Solubility In Water Miscible
    Refractive Index 1.446
    Flash Point 77°C
    Synonyms 4-Hydroxy-tetrahydropyran-4-one, 4-Pyranone, dihydro-6H-oxan-4-one
    Smiles O=C1CCOCC1
    Inchi InChI=1S/C5H8O2/c6-5-1-3-7-4-2-5/h1,3-4H2,2H3

    As an accredited Tetrahydro-4H-Pyran-4-One factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle, 100g quantity, tightly sealed with a screw cap, labeled with the chemical name, purity, hazard, and handling instructions.
    Shipping Tetrahydro-4H-pyran-4-one should be shipped in tightly sealed containers, protected from moisture and direct sunlight. It is typically packed in amber glass bottles or HDPE containers, cushioned to prevent breakage. Transport should comply with relevant regulations, with labeling indicating its chemical identity and hazard information for safe handling and storage.
    Storage Tetrahydro-4H-Pyran-4-One should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from heat, sparks, and open flames. Protect from moisture and direct sunlight. Store separately from incompatible substances such as strong oxidizers and acids. Use secondary containment to prevent leaks or spills, and ensure labeling is clear and compliant with safety regulations.
    Application of Tetrahydro-4H-Pyran-4-One

    Applications of Tetrahydro-4H-Pyran-4-One in Industrial Manufacturing

    Tetrahydro-4H-Pyran-4-One is a vital intermediate for multiple sectors requiring advanced chemical processing. As a manufacturer, we supply this raw material to downstream partners with precise formulation needs for refined chemical performance. Below are key industrial application fields with application-specific technical, compliance, and procedural outlines.

    1. Pharmaceutical Synthesis: API and Intermediate Production

    Pharmaceutical formulators utilize Tetrahydro-4H-Pyran-4-One primarily as a building block for synthesizing active pharmaceutical ingredients where six-membered lactone structures are essential. It serves as a precursor for antiviral, anticancer, and cardiovascular drug intermediates through hydrogenation and functional group interconversion in controlled reactors. Quality assurance requires stringent traceability and impurity control at every stage, aligning with international pharmacopeial standards. The chemical is integrated at the targeted stage after primary raw material condensation, ensuring the correct stereochemistry before multi-step synthesis toward the final API. End products span synthetic drugs such as prodrugs that integrate oxygen-containing heterocycles and controlled-release pharmaceutical forms.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • United States Pharmacopeia (USP) for precursor purity limits
    • European Pharmacopoeia (EP) guidelines for starting materials
    • GMP documentation and traceability protocols

    Typical usage ratio

    • 0.5%–5% w/w based on the target API’s total batch yield, with the ratio refined for reaction selectivity and efficiency according to process kinetics and downstream conversion requirements

    Downstream process integration

    • Integration post-condensation or Grignard reaction phase, followed by purification and stereoselective transformations, monitored by HPLC and GC-MS

    Final product types

    • Small molecule APIs containing pyran derivatives
    • Advanced pharmaceutical intermediates for cardiovascular therapy
    • Precursor compounds for extended-release medications
    • Specialty building blocks for clinical intermediate research

    2. Flavors and Fragrances Manufacturing

    Downstream producers in the flavors and fragrances sector employ Tetrahydro-4H-Pyran-4-One to create Maillard-reaction aroma compounds. It imparts unique roasted and caramel profiles in flavor bases. Flavor chemists utilize the compound in controlled thermal reactions with reducing sugars or amines, referencing international food safety and composition criteria. Compliance focuses on limiting residual solvent, allergen control, and trace-level off-notes. This material is introduced during the aroma precursor formulation and refined through distillation and fractionation steps to isolate the desired note concentration. Fragrance developers incorporate the resultant molecules directly into commercial compositions destined for both food and fine fragrance markets.

    Industry compliance standards

    • FEMA GRAS program (Flavor and Extract Manufacturers Association)
    • European Flavouring Regulation (EC) No 1334/2008
    • JECFA/Food Chemicals Codex (FCC)
    • ISO 22000 Food Safety Management for additive processing

    Typical usage ratio

    • 0.1%–1.0% w/w relative to the total aroma formulation; dosing depends on matrix effects and final sensory strength demanded by end user applications

    Downstream process integration

    • Added during the aroma reaction precursor blend; followed by Maillard reaction and fractionation; final fraction standardized by GC-olfactometry

    Final product types

    • Natural and artificial caramel flavor bases
    • Roasted, bready, and nutty fragrance ingredients
    • Confectionary compounds for chocolate/caramel notes
    • Fine fragrance and perfumery compositions containing lactonic undertones

    3. Agrochemical Intermediate Synthesis

    Manufacturers in the crop protection segment select Tetrahydro-4H-Pyran-4-One as a reactive intermediate for synthesizing specific herbicides and fungicide actives where oxygen-containing heterocycles deliver key biological activities. Material handling must meet agrochemical GMP and international registration dossiers, validating absence of unintended by-products and confirming consistent reactivity indices. The material joins multi-step synthesis after the initial nucleophilic addition step, where its cyclic ether structure aids in constructing systemic pesticide molecules. End products target broad-leaf and cereal crop market needs with rigorous field residue validation.

    Industry compliance standards

    • FAO/WHO specifications for pesticide ingredients
    • OECD Principles of Good Laboratory Practice (GLP) for intermediate QC
    • REACH registration for agrochemical building blocks
    • ISO 9001 for supplier production process auditing

    Typical usage ratio

    • Ranges from 0.2% to 1.5% by batch mass, determined by specific synthetic route and efficiency of heterocycle assembly in target active

    Downstream process integration

    • Charged into reactor post-initial condensation; followed by heterocyclization and chlorination; batch progression tracked with LC-MS before downstream isolation and formulation

    Final product types

    • Systemic fungicides effective against cereal crop pathogens
    • Herbicidal active intermediates based on pyran systems
    • Precursors for new-generation crop protection agents
    • Active ingredient precursors for combination pesticide formulations

    4. Polymer and Resin Modification

    Specialty polymer and industrial resin manufacturers incorporate Tetrahydro-4H-Pyran-4-One to introduce lactone moieties responsible for controlled hydrophilicity, flexibility, and compatibility in high-performance coatings, adhesives, and sealants. Integration occurs during pre-polymer formation, typically following acrylate or epoxy monomer activation, where the cyclic ether group facilitates targeted chain extension or crosslinking. Compliance auditing addresses migration and extractable monomer content, referencing both international technical standards and local regulatory thresholds. End users benefit by achieving formulated resins with improved film strength, weatherability, and substrate adhesion for demanding automotive, construction, and industrial component use.

    Industry compliance standards

    • ISO 9001:2015 for industrial quality management
    • ASTM D638 (standard test method for tensile properties of plastics)
    • EU REACH compliance for polymer additives
    • US EPA 40 CFR part 63 (National Emission Standards for Hazardous Air Pollutants in resin manufacturing)

    Typical usage ratio

    • 0.3%–2.0% per resin batch, with ratio adjusted based on targeted mechanical, barrier, or flexibility properties and end-use performance requirements

    Downstream process integration

    • Introduced after monomer activation in batch or continuous reactors; followed by copolymerization or curing and post-reaction blending under monitored temperature and pH parameters

    Final product types

    • Waterborne and solventborne industrial coatings
    • Structural adhesives for automotive assembly
    • Flexible construction sealant compounds
    • Electrical encapsulant resin formulations

    5. Advanced Performance Solvents Formulation

    Producers formulating specialty solvent blends employ Tetrahydro-4H-Pyran-4-One for its unique polarity and solvency parameters. It facilitates formulation of systems targeting precision electronic cleaning, fiber spinning, and ink manufacturing. Regulatory control mandates solvent purity assurance, consistent batch analytics, and VOC emission reporting, with downstream users demanding documented low impurity levels and robust toxicological profiles. The material is dosed during solvent blending or incorporated into azeotropic mixtures, with final solvent characteristics validated by GC and application-based stability tests before commercial release.

    Industry compliance standards

    • ASTM D6806 determination of VOC content
    • US EPA TSCA Inventory listing
    • EN 71-9 Safety of Toys, Organic Chemical Compounds content (for ink and pen applications)
    • Good Laboratory Practice (GLP) for product qualification testing

    Typical usage ratio

    • 1%–5% in total solvent composition, tailored to solubility, evaporation rate, and compatibility demands of target surfaces or matrix components

    Downstream process integration

    • Blended into finished solvent packages at final mixing stage, followed by filtration, quality check, and packaging for OEM or industrial use

    Final product types

    • Precision electronic and optical cleaning solvents
    • Gravure, flexographic, and inkjet ink bases
    • Specialty fiber spinning solvent formulations
    • Release agent blends for engineering polymers
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    Certification & Compliance
    More Introduction

    Tetrahydro-4H-Pyran-4-One: Essential Building Block for Complex Syntheses

    Introducing a Staple for Fine Chemical Manufacturing

    In the world of organic chemistry and industrial manufacturing, few compounds carry the same weight as Tetrahydro-4H-Pyran-4-One. As chemical producers with decades of experience refining and scaling up this molecule, we have seen both the quiet reliability and quiet innovation that come with using this intermediate. Our operational focus centers on the C5 backbone, and Tetrahydro-4H-Pyran-4-One, known in some circles as 4-Pyranone, stands apart thanks to its ring structure and reactivity profile. Our facility handles Tetrahydro-4H-Pyran-4-One under carefully maintained conditions so researchers and industrial clients receive a product batch after batch that supports both pilot and large-scale production plans.

    Honest Chemistry: Production Details and Handling

    Our Tetrahydro-4H-Pyran-4-One starts as a clear, slightly viscous liquid, typically offered with a purity above 98%. Consistency and reliability follow from the continuous processes we use, not stop-start lab reactions. Full distillation cycles at reduced pressure allow us to avoid thermal degradation, protecting the core structure chemists rely on. Moisture control and oxygen exclusion matter not only during synthesis but throughout storage and transportation. We store this material in sealed stainless steel or glass-lined drums and ship with argon or nitrogen headspace where practical, minimizing hydrolysis—a key point for anyone planning further transformation steps.

    Why Chemists Still Want Tetrahydro-4H-Pyran-4-One on Their Shelves

    We have watched Tetrahydro-4H-Pyran-4-One fuel breakthroughs in pharmaceuticals, perfumery, flavor chemistry, and agrochemicals. The oxygen in its ring opens doors for selective transformations. Its structure encourages addition reactions, reductions, and acylations—a perfect starting block for pyran derivatives and lactones. In chiral synthesis, some of our clients build complexity onto this simple ring, knowing it remains stable through highly selective reactions. Synthetically, the six-membered ring means fewer worries about ring strain, making scale-ups less risky, especially compared with five-membered or larger, more rigid products.

    Distinct Differences: Comparing with Other Organic Intermediates

    Tetrahydro-4H-Pyran-4-One stands out noticeably from similar-looking compounds like furanones, tetrahydropyran, or dihydropyran. Its added oxygen atom and saturated nature create different reactivity. Furanones, for instance, often degrade easily under mild basic or acidic conditions; in contrast, Tetrahydro-4H-Pyran-4-One’s ring endures such conditions, making it less troublesome in multistep sequences. Compared to tetrahydropyran, the ketone feature at the 4-position unlocks carbonyl chemistry routes—think nucleophilic additions, Grignard reactions, or Wittig transformations.

    Our operators handle pyranones daily. The difference becomes apparent once you run kilo-scale operations. Tetrahydro-4H-Pyran-4-One remains manageable in demanding reaction conditions where others fail, saving valuable time lost to cleanups or restarts. This saves not just on solvent, energy, or safety compliance, but also on lost output during unscheduled batch failures. That reliability may not make headlines, but it lets product teams plan launches and avoid unnecessary troubleshooting months later down the supply chain.

    Applications in Modern Industrial Workflows

    Pharmaceutical laboratories build heterocyclic scaffolds from this compound. Several confidential client projects have used our Tetrahydro-4H-Pyran-4-One as a precursor for active pharmaceutical ingredients (API) synthesis. Its robust performance in hydrogenation and alkylation pipelines has won repeat orders, especially from fine chemical houses targeting chiral drugs. For smaller molecule targets, it bridges the gap between simple carbohydrate precursors and high-complexity polyethers.

    Inside the flavors and fragrances sector, buyers turn to this product for creating aromas like caramel or creamy notes. We have even worked with analytical chemistry teams to confirm key flavor thresholds and aldehyde intermediates generated from our batches, supporting the next generation of aroma designers. When pursuing green chemistry, process developers often highlight the benefit that our Tetrahydro-4H-Pyran-4-One brings: minimal side-products, straightforward waste handling, and high conversion rates on nickel or palladium catalysts.

    Solving Challenges Unique to Pyranone Chemistry

    Every intermediate brings handling quirks. Tetrahydro-4H-Pyran-4-One tends to attract moisture, so we over-engineer drying cycles and prefer using sealed transfer lines. Regular testing for water content prevents unwanted ring-opening that eats into yields or leads to unpredictable offcuts. On rare occasions, when customers encounter runaway exotherms in scale-up, we share our internal energetic profiling and heat-release curves gathered during our own manufacturing validations.

    Another challenge appears in impurity control. Reduction by-products, if left unchecked, contaminate distillation overheads and lower the product’s shelf life. We rely on in-line gas chromatography for real-time feedback and, in challenging batches, fall back on fractional distillation to achieve tight purity splits. These methods didn’t come from textbooks but from nights discussing bottlenecks between plant engineers and lab staff. Those moments often make the difference between an unusable batch and a successful campaign.

    Tetrahydro-4H-Pyran-4-One in Sustainable Chemistry Projects

    New regulatory pushes force us to think several steps ahead. Tetrahydro-4H-Pyran-4-One plays a role in greener, more atom-economic synthetic strategies promoted by modern chemists. Our team participates in multi-partner initiatives that target waste reduction and renewable feedstocks. By integrating continuous flow protocols and closed-loop solvent recovery, we can demonstrate reduced emissions without sacrificing throughput. These investments support both in-house process safety and our clients’ environmental audit goals.

    Down the line, we share batch-level lifecycle data with pilot plant partners who use Tetrahydro-4H-Pyran-4-One in biocatalytic upgrades—pulling structural motifs from nature and translating them into finished products with fewer synthetic steps. Results show a direct link between our feedstock purity and final product performance, especially for sensitive catalysis programs.

    Safe Logistics and Responsible Storage

    As original manufacturers, we spend just as much time on transit safety as on process chemistry. Our product leaves the facility in hazardous chemical transport containers that meet current hazardous material shipping standards. We provide packaging in quantities ranging from several kilograms up to interim bulk containers, fitted with pressure relief hardware and inert gas blankets. Local stock points carry reserve material for critical customers, reducing supply lead-times and keeping projects on schedule.

    Storage integrates desiccant cartridges and overpack drums, minimizing water uptake. For users who stage the product in open warehouses, we supply routine water-content analyses by request. This field experience helps process engineers keep their line running smoothly, especially in warm or humid climates where Tetrahydro-4H-Pyran-4-One’s hygroscopicity could otherwise derail successive steps.

    Long-Term Perspective on Consistent Quality

    A molecule like Tetrahydro-4H-Pyran-4-One gets chosen just as much for its chemical utility as its supply reliability. No customer wants to approve a raw material only to have future batches drift in color, odor, or purity. That’s why we commit factory resources to ongoing stability and compatibility testing—even on lots that pass all immediate specifications. Infrared and nuclear magnetic resonance checks, alongside simple TLC spot checks, keep every ton of production within close limits.

    On top of yearly audits, we participate in collaborative user feedback sessions where scale-up chemists, safety officers, and developers compare outstanding batches and flag improvement opportunities. Candid discussions with end users and their process staff keep us honest and help us adjust parameters to avoid downstream processing hiccups. Sometimes our process control team tunes reactor settings or adjusts distillation cut points based on these direct reports.

    Regulatory Compliance—Real-World Practice, Not Just Paperwork

    Complying with chemical safety rules has always been more than ticking boxes for us. Our internal lab team manages all required documentation for hazard communication, GHS labelling, and shipment traceability. We keep robust change control records and batch genealogy. Each container tracks back directly to detailed synthesis and QC records, rarely managed on paper but held in our in-house database. Should customers face a regulatory or registration challenge, past cooperation with auditors is well documented and easily referenced, promoting quick resolution.

    Practical experience reminds us that no certificate or compliance secures trust as much as direct access and honest reporting. Clients occasionally request help with REACH registration, EPA notification, or local authorization. Our technical team steps up with real-world compositional data, not broad declarations, and provides detailed impurity profiles on request.

    Tailored Solutions and Joint Development Initiatives

    While producing Tetrahydro-4H-Pyran-4-One at industrial scale, we have joined forces with customers in need of modified physical properties, such as altered viscosity or narrower cut ranges. For one custom project, our team worked alongside a research partner, adjusting hydrogenation temperature and catalyst load to yield an isomeric blend with tighter control over minor byproducts. This iterative, hands-on process continues to set us apart from passive resellers.

    Rather than offering a fixed menu, we share our manufacturing environment for pilot runs or novel downstream development, openly tackling filtration or crystallization snags together. Open plant access and collaborative troubleshooting have let several pharma clients reduce their in-process impurities simply by reviewing separation sequences and sampling protocols side by side with our quality team.

    Transparent Communication and Traceable Processes

    Every chemical purchase represents more than a transaction. Our approach remains straightforward: provide accurate, current production information, discuss any changes to typical impurity levels or packaging format, and notify buyers about predicted raw material availability. Customers stay informed about expected lead-times. This transparency reflects our belief that steady dialogue lessens risk for end users and reduces the chance of unpleasant surprises mid-campaign.

    Product stewardship extends beyond dispatch. In some cases, we help train warehouse and plant staff on specific safe handling practices honed by our own operations. It is common sense on a molecule like Tetrahydro-4H-Pyran-4-One—real consequences result from cutting corners on labeling or ventilation. As the team closest to the process, we see ourselves as responsible for passing on practical safety lessons that protect both people and product.

    Supporting Discovery with Consistent Raw Materials

    Many researchers, especially in smaller organizations, juggle resource constraints and tight timelines. We recognize that a dependable supply of Tetrahydro-4H-Pyran-4-One often props up a whole bench of synthetic work. Delivering material on-spec and on-time underpins repeatable scientific results. For scale-up, knowing the input’s impurity fingerprint and moisture level stays unchanged across quarters slashes the risk of costly reruns.

    Working alongside contract manufacturers and specialty chemical developers, we track which processing parameters most affect multi-step yield loss or side-product build-up. Users know from experience which raw materials perform reliably across batches, allowing them to focus on creative molecular work without the distraction of supply chain failures. This sense of partnership—rooted in transparent dialogue and nimble technical support—makes laboratory innovation possible at industrial scale.

    Conclusion: Experience-Driven Confidence in Every Batch

    Our long commitment to making Tetrahydro-4H-Pyran-4-One has taught us to appreciate both the quiet value and occasional challenge of working with a core intermediate. Repeatable quality, robust impurity control, and clear communication set our approach apart from the generic options. In every container shipped, chemical teams know they can build on our output—confident that both molecule and manufacturer are ready to meet project demands, even as chemistry keeps evolving.