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N-(2-Methoxyethyl)-Pyridinium Bromide

    • Product Name N-(2-Methoxyethyl)-Pyridinium Bromide
    • Alias MEPB
    • Einecs 257-591-8
    • 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

    680751

    Chemicalname N-(2-Methoxyethyl)-Pyridinium Bromide
    Casnumber 21917-12-2
    Molecularformula C8H12BrNO
    Molecularweight 234.10 g/mol
    Appearance White to off-white solid
    Meltingpoint 148-152 °C
    Solubility Soluble in water
    Purity Typically >98%
    Density 1.38 g/cm³ (approximate)
    Storagetemperature 2-8 °C
    Synonyms 2-Methoxyethylpyridinium bromide
    Boilingpoint Decomposes before boiling
    Ecnumber 244-701-1
    Hazardclass Irritant

    As an accredited N-(2-Methoxyethyl)-Pyridinium Bromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 25g N-(2-Methoxyethyl)-Pyridinium Bromide is packaged in a sealed amber glass bottle with a tamper-evident screw cap.
    Shipping N-(2-Methoxyethyl)-Pyridinium Bromide should be shipped in tightly sealed containers, protected from moisture and direct sunlight. Transport must comply with relevant chemical and hazardous materials regulations. Proper labeling and documentation are required. Avoid physical damage, and ensure secondary containment to prevent leaks or spills during transit. Handle with suitable personal protective equipment.
    Storage N-(2-Methoxyethyl)-Pyridinium Bromide should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area, away from sources of heat, ignition, and moisture. Keep away from incompatible substances such as strong oxidizing agents. Store at room temperature and protect from light. Properly label the container and ensure access is restricted to trained personnel.
    Application of N-(2-Methoxyethyl)-Pyridinium Bromide

    Applications of N-(2-Methoxyethyl)-Pyridinium Bromide in Industrial Manufacturing

    N-(2-Methoxyethyl)-Pyridinium Bromide serves as a dedicated intermediate and process agent in several advanced manufacturing sectors. Its unique pyridinium structure and alkoxy functionality enable its implementation in diverse catalytic processes, organic synthesis routes, and specialty material formulations. Below are key downstream sectors where this compound supports reliable and compliant industrial output.

    1. Phase-Transfer Catalysis for Fine Chemical Synthesis

    Major fine chemical producers use this pyridinium salt as a phase-transfer catalyst to enhance nucleophilic substitution and alkylation reactions, especially in systems involving immiscible phases. Its quaternary nature increases the reactivity of anionic species, which translates to higher conversion rates and improved selectivity in the manufacture of pharmaceuticals, agrochemical building blocks, and specialty intermediates. Recurrent applications focus on batch processes requiring stable, reproducible product profiles that pass stringent regulatory reviews prior to further synthesis steps or export. Plant process engineers control catalyst ratio precisely to minimize quaternary ammonium residuals in bulk output.

    Industry compliance standards

    • REACH (EC Regulation No 1907/2006) for phase-transfer catalysts
    • GMP Part II for active pharmaceutical ingredients (APIs)
    • IPEC-PQG GMP Guide for excipient intermediates
    • US EPA Toxic Substances Control Act (TSCA) for exported chemicals

    Typical usage ratio

    • 0.5–2.5% w/w relative to organic substrate; process chemists adjust based on target reaction conversion, substrate reactivity, and impurity control in downstream purification

    Downstream process integration

    • Catalyst charged to aqueous or biphasic reaction vessel after initial organic substrate loading and solvent addition; system maintained under controlled temperature and stirring for phase-transfer contact, followed by neutralization and product work-up

    Final product types

    • Pyridine-based pharmaceutical intermediates
    • Agrochemical actives
    • Flavor and fragrance precursors
    • Specialty monomers for polymers

    2. Electrolytes for Organic Electrochemical Synthesis

    Specialty synthesis plants incorporate this quaternary salt as an electrolyte in organic electrochemical transformations, particularly in setups for oxidative or reductive coupling and selective functionalization of aromatic compounds. It ensures ionic conductivity and stability across electrodes, supporting scalable manufacturing of advanced intermediates where high purity and consistent performance under applied current are critical. Downstream laboratories validate each batch to conform with electronic grade purity and ionic mobility specifications prior to charging synthesis cells.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management for chemical synthesis)
    • IEC 61010-2-045 (Safety in electrochemical installations)
    • ICH Q7 for manufacture of chemical intermediates
    • USP <761> Conductivity standards (when used in pharmaceutical pre-curser production)

    Typical usage ratio

    • 0.1–0.6 mol/L in solvent system; chemists increase molarity for higher-conductivity applications or when system resistance exceeds threshold for desired current density

    Downstream process integration

    • Electrolyte dissolved in chosen solvent with organic substrate; solution transferred to electrolysis cell, with continuous current supply and product extraction monitored by in-line sensors for conversion and impurity levels

    Final product types

    • N-oxide aromatics
    • Cationic dye intermediates
    • Advanced organic linkers for material science
    • API precursors for specialty synthesis

    3. Ionic Liquid Component for Advanced Polymerization Systems

    Producers of high-performance coatings and engineered resins add N-(2-Methoxyethyl)-Pyridinium Bromide as a cationic component in custom ionic liquids, leveraging its electrostatic balance and compatibility with polymerization initiators. In radical and cationic polymerizations, especially for specialty acrylates and epoxy precursors, this salt serves to stabilize active centers and modulate reaction microenvironments, helping manufacturers achieve narrowly dispersed polymer chain lengths and precise functional group incorporation. Quality assurance teams track residual levels to avoid color or performance variation in the finished polymers.

    Industry compliance standards

    • ISO 14001 (Environmental in chemical processing)
    • EN 71-3 (Migration of elements for coatings and toys, Europe)
    • ASTM D256 (Impact Resistance for plastics)
    • EU RoHS Directive (for electronic coatings)

    Typical usage ratio

    • 0.2–1.0% w/w as ionic liquid additive; amount tuned during pilot phase to optimize viscosity and molecular weight distribution for target resin type

    Downstream process integration

    • Incorporated during pre-polymer mixture blending, before catalyst or initiator addition; subsequent process determines curing method—thermal, photoinitiated, or catalytic—with online monitoring of polymerization progress

    Final product types

    • UV-curable coatings
    • Specialty epoxy resins
    • Functionalized acrylate polymers
    • Coating additives for electronics

    4. Quaternization Reagent for Active Pharmaceutical Ingredient Manufacturing

    API manufacturers use this compound as a selective quaternization agent in pyridine and nicotinamide derivative synthesis. The 2-methoxyethyl side chain offers reactivity control, supporting the manufacture of intermediates for central nervous system agents and anti-infective compounds. Process chemists integrate rigorous in-process controls and post-reaction purification to meet global pharmacopoeial standards. The choice of solvent and temperature profile takes into account the stability of both reactants and the desired methylated or ethylated moiety, preventing overalkylation that could complicate subsequent API purification steps.

    Industry compliance standards

    • European Pharmacopoeia (Ph. Eur.) for APIs and intermediates
    • USP General Chapter <467> on residual solvents
    • WHO GMP for active ingredient manufacturing
    • China Pharmacopoeia (ChP., if exported to China)

    Typical usage ratio

    • Equimolar to 1.5 equivalents vs. basic nitrogen functionality in substrate; adjusted up to 2 equivalents to drive complete reaction for less reactive substrates

    Downstream process integration

    • Reagent charged after base activation of the pyridine ring; stirred at controlled temperature with solvent under inert atmosphere; completed mixture filtered and washed repeatedly before downstream conversion or direct isolation

    Final product types

    • Pharmaceutical-grade pyridinium API intermediates
    • Quaternized vitamin derivatives
    • Central nervous system (CNS) agent precursors
    • Intermediates for anti-infective APIs
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    Certification & Compliance
    More Introduction

    N-(2-Methoxyethyl)-Pyridinium Bromide: Direct Insights from the Manufacturer's Floor

    What Sets This Compound Apart

    Daily work in chemical manufacturing brings a sharp awareness that not all pyridinium salts perform the same. N-(2-Methoxyethyl)-Pyridinium Bromide, with the stability granted by its methoxyethyl side chain, has carved out an important niche. The detailed steps behind its synthesis, the choice of raw pyridine and the attention we give to the purity of 2-methoxyethyl bromide, shape the consistency customers need for precise applications. During reaction step-ups, temperature and timing become more than variables; they make the difference between high assay material and a batch that doesn't meet our threshold. Every time a customer calls us about their reaction selectivity or solubility challenges, we remember why even slight formula changes bring clear differences to downstream processes.

    The model we supply today was not the version we started with a decade ago. Incremental improvements in water content control, the wash protocol, and the scale-up parameters have made sure batch-to-batch reproducibility builds trust with our partners. Specifications matter far less than tangible results in the vial or reaction flask. Customers who work in organocatalysis, ion-pairing, or transfer reactions describe a reduced risk of side-product formation and higher yield, compared to pyridinium salts with longer or more hydrophobic alkyl chains.

    Synthesis Experience: Clean Reactions and Contaminant Avoidance

    Every kilogram of N-(2-Methoxyethyl)-Pyridinium Bromide shipped from our site tells a story. Careful control in quenching, extra filtration passes, and real-time monitoring during drying prove more valuable than boastful claims about theoretical yields. Our team faces the usual cold-room headaches in the final crystallization stage, where product purity runs up against the inevitability of trace bromide contaminants. No shortcut in this step passes muster here. Regular checks with HPLC and NMR keep us honest to our target profile: white to off-white crystalline powder above 98 percent assay, minimal halide excess, uniform solubility profile in common polar solvents.

    Compared to other pyridinium bromides, the methoxyethyl group grants markedly increased solubility in ethyl acetate, acetonitrile, and DMF, without inducing the same rapid decomposition rates observed in higher alkoxy derivatives. Our R&D team keeps tabs on reports and feedback from university researchers who push our materials to the fringe of their process envelopes. A racemic pyridinium bromide, bearing a simpler alkyl group, often precipitates side products or drives up waste byproducts under extended heating. The intermediate polarity of the methoxyethyl chain solves a genuine, recurring problem in solvent-switch protocols and multi-step syntheses.

    Supporting Research and Industry Advances

    Our plant supports more than direct in-house use. Customers working in fine chemicals and drug intermediates transfer valuable feedback about how the methoxyethyl substituent gives them better kinetic isotope effects or improved rates in SNAr-type substitutions. This compound has made appearances in journal publications describing its role in phase-transfer catalysis and ion-exchange columns where standard pyridinium analogues fail to deliver. Our own trials, running side-by-side batch reactions with N-butyl, N-benzyl, and N-(2-methoxyethyl), confirm what customers have suspected: the subtle change in electron density at the pyridinium nitrogen influences reactivity in surprising—sometimes crucial—ways.

    We've talked directly with specialty API manufacturers about why they spec N-(2-Methoxyethyl)-Pyridinium Bromide for cross-coupling and certain nucleophilic substitutions. Its ability to cleanly enter organic layers, with fewer subsequent wash steps, shaves hours from campaign timelines. No small feat in a world where capacity and turnaround rule. Lab teams who run iterative, multistep syntheses have shared how a reliable batch, from the same lot, means one variable less when chasing tight impurity profiles or scaling up from gram to kilo. It's the difference between arbitrary selection and chemical reasoning grounded in day-to-day challenges.

    Downstream Handling and Safety Habits

    Much work gets done downstream of the grade certificate. Handling experience shapes our approach as much as analytical data do. Teams involved in bulk packaging worry about caking and static buildup. We've refined our grind and sieve steps to create consistent, flowable material, resistant to aggregation, and easy to handle in automated dosing systems.

    Customers engaged in moisture-sensitive syntheses appreciate our attention to low water content. Real-world use means tackling air exposure during transfer, so we've turned ventilation and glovebox pre-packing into standard practice for especially demanding users. Disposing of spent residues means adhering to regional waste mandates, with regular audits on spent bromide capture. We don't treat safety as a checklist, but an evolving set of habits we share with partners who run lean or complicated operations.

    Authenticity in Supply Chains and Customer Dialogue

    We don’t call ourselves traders or brokers, and every lot manufactured under our roof gets a full batch record and origin trace. Stories of “surprise” pyridinium salt contamination, under different names and origins, are more common than buyers admit. Direct-from-manufacturer transparency turns up often in customer reviews, especially from buyers who previously encountered re-bottled or cut batches sold through layers of intermediaries. Our transparency on process, operator training, and traceability is not a pitch point but a necessity born out of market realities.

    We take pride in honest dialogue about performance limits. Our N-(2-Methoxyethyl)-Pyridinium Bromide doesn't suit every scenario. Under strong basic conditions, the methoxyethyl moiety decomposes erratically—the same is not true for more robust, non-etherified analogues. Instead of overselling, we keep direct channels open for project-specific queries, often recommending alternative pyridinium salts when the anticipated conditions demand greater robustness. Manufacturers and researchers who treat their procurement as a technical extension of their lab or plant recognize the reason for this approach: address potential reaction bottlenecks before they turn up at scale.

    Comparative Observations with Other Pyridinium Salts

    Years of batch work have shown obvious physical and handling differences. Standard N-alkyl pyridinium bromides clump up after prolonged storage unless stabilized with inert carriers. N-(2-Methoxyethyl)-Pyridinium Bromide, owing to its side-chain mobility, packs slightly less densely, a feature that affects dosing in precision applications but gives smoother dissolution characteristics. The scent also distinguishes it; our staff can recognize faint ether undertones absent in most shorter-chain pyridinium analogues—one more marker during QA sampling in a busy warehouse.

    Reactivity and ease of use aren't subtle distinctions on the shop floor. Operators report quicker dissolution, shorter mixing times, and much easier pH tuning in multi-component reaction preps. This functional ease streams from chemical structure rather than broad marketing claims. The team tracks feedback from pharmaceutical and agrochemical partners, who benefit most during process development, scale-up, or preformulation when time pressure clashes with the need for accuracy.

    R&D: Continuous Improvement on Reliability

    Push for improvement comes as much from the plant as from the customer. By onboarding fresh process engineers and chemists eager to question legacy protocol, we've fine-tuned solvent swap-out points, extraction times, and drying temperatures. Even when industry norms suggest “good enough,” internal records sometimes reveal unexpected moisture spikes or color changes. Rather than hiding these findings, they enter our routine review process. Small tweaks in isolation or recrystallization saves customers hours in purification or troubleshooting.

    We’ve collaborated with academic labs to test alternative bromide sources that might reduce trace sodium or potassium impurities—especially for electrochemical users who require ultra-low background interference. The shift toward greener solvents and energy-efficient steps plays out in pilot batch runs, with data feeding directly into our next scale-up trial. Factory floor feedback matters—operators often notice differences in product “feel” and flow long before analytics confirm chemical shifts.

    What Customers Actually Gain

    In practice, the real gain for a customer buying direct from us goes beyond a batch certificate. If a kilo batch needs a test-dissolve into toluene or DMF to confirm absence of haze, we run it before packing—no exceptions. The cumulative effect of years thinning, filtering, and shaking powders for clients in specialty catalysis, polymerization, or analytical sample prep sharpens our perspective on what matters to the bench chemist or line operator. A cleaner reaction, a lower byproduct count, a smoother separation—these benefits aren’t abstract marketing lines but recurring feedback from real-world runs and published papers.

    Customers also note the critical difference that comes from immediate, first-hand answers to technical queries. End-users who ask about reactivity with less standard nucleophiles, potential for oxidative degradation, or uncommon solvent compatibility will find more accuracy from us than from a catalog or a reseller. Our team has managed test runs, handled failures, re-checked suspect color changes—and seen the evidence before the material ever leaves our doors.

    Our Pledge: Consistent Quality Backed by Experience

    Consistency isn’t just a metric; it’s a consequence of vigilance during sourcing, manufacturing, and packaging. Powder may leave on a Monday or a Friday, but the expectations it meets must remain unchanged. New users often worry about historical “bad actor” lots—off-white, poorly soluble, or oddly scented. We welcome skepticism, not as a nuisance but an essential driver to produce better materials every month. Ten years ago we ran our first kilo batch in a pilot kettle and tracked the main pain points from product moisture retention to rare-case off-gassing in packed lines. Each incident turns into a safety meeting, a workflow update, or a subtle plant tweak.

    We measure success not by the number of batches shipped but by the number of repeat requests for the same lot or technical consultation. Partnerships with firms running hundreds of kilo-scale runs annually have taught us the unglamorous, yet absolutely necessary routines: check, test, confirm again. Overpromising hazardous tolerance in attempt to grab a sale doesn’t survive in front of experienced process chemists who value truthful dialogue and evidence in every order repeat.

    Final Perspective: The Human Edge in Chemical Manufacturing

    While technology advances and digital tracking improve, chemistry remains a human endeavor. We see mistakes caught by sharp-eyed plant techs, improvements suggested by junior operators, and odd sample results flagged by senior analysts. That collaboration, running from the reactor room to the analytics lab, shapes every lot of N-(2-Methoxyethyl)-Pyridinium Bromide we produce and defines our belief in the value of direct manufacturer-buyer relationships.

    For sourcing teams, research scientists, and production engineers, our doors and lines remain open. The questions, cautions, and solutions discussed over years of interaction make it clear: choices in specialty chemicals like N-(2-Methoxyethyl)-Pyridinium Bromide gain meaning only through the understanding and reliability invested by those who make them. A future batch may carry your tweaks, your specifications, and your successes onward.