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1-Tosylpyrrole

    • Product Name 1-Tosylpyrrole
    • Alias 1-Tosyl-1H-pyrrole
    • Einecs 629-884-9
    • 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

    643787

    Name 1-Tosylpyrrole
    Cas Number 61269-63-4
    Molecular Formula C11H11NO2S
    Molecular Weight 221.28
    Appearance White to off-white solid
    Melting Point 92-95°C
    Solubility Soluble in organic solvents (e.g., dichloromethane, ethanol)
    Purity Typically >97%
    Storage Temperature Store at room temperature, protected from moisture
    Smiles CC1=CC=C(S(=O)(=O)N2C=CC=C2)C=C1
    Inchi InChI=1S/C11H11NO2S/c1-9-4-3-5-10(6-9)15(13,14)12-11-7-2-8-16-11/h2-8H,1H3

    As an accredited 1-Tosylpyrrole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1-Tosylpyrrole is packaged in a 25g amber glass bottle with a secure screw cap, clearly labeled for laboratory use.
    Shipping 1-Tosylpyrrole is typically shipped in tightly-sealed, chemical-resistant containers to prevent moisture or contamination. It is handled as a non-hazardous substance under normal conditions, but should be stored in a cool, dry place, away from strong oxidizers. Proper labeling and compliance with local and international regulations are observed during shipping.
    Storage 1-Tosylpyrrole should be stored in a tightly sealed container, placed in a cool, dry, and well-ventilated area away from direct sunlight, heat sources, and incompatible materials such as strong oxidizers. Keep the storage area free from moisture. Ensure proper labeling and follow standard chemical safety protocols. Use secondary containment to prevent leaks or spills, and limit access to authorized personnel only.
    Application of 1-Tosylpyrrole

    Applications of 1-Tosylpyrrole in Industrial Manufacturing

    1-Tosylpyrrole serves as a critical intermediate across advanced fine chemical sectors. Manufacturers utilize this compound for specialty synthesis where selective reactivity and process reliability are vital. Our facility integrates quality management and traceability at every production stage to ensure consistent performance for industrial clients.

    1. Pharmaceutical Active Ingredient Synthesis

    1-Tosylpyrrole enables targeted N-heterocycle functionalization in complex molecule assembly. Process chemists employ it in key steps of small-molecule and peptide-based Active Pharmaceutical Ingredient (API) production, particularly where selective sulfonyl protection of pyrrole derivatives supports subsequent transformations. This intermediate provides robust reactivity under mild conditions, reducing byproduct formation and facilitating regulatory compliance in cGMP environments necessary for pharmaceutical manufacturing.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guidelines
    • US FDA 21 CFR Part 210/211
    • EU EMA API synthesis regulations
    • USP, EP, and JP relevant monographs for APIs (final validation required for each project)

    Typical usage ratio

    • Used at 0.2–1.5 molar equivalents depending on substrate reactivity and desired yield in multi-step syntheses
    • Process development teams adjust stoichiometry to balance conversion, cost, and purification requirements

    Downstream process integration

    • Introduced during protection steps in heterocycle assembly
    • Feeds into coupling, alkylation, and deprotection sequences
    • Used for isolating desired intermediates for late-stage functionalization
    • Facilitates downstream purification by modifying solubility of synthetic intermediates

    Final product types

    • Small molecule drug candidates
    • Peptide-based APIs requiring selective pyrrole modification
    • Pyrrole-core building blocks for CNS/oncology compounds
    • Sterilizable active substances for injectable formulations

    2. Specialty Agrochemical Ingredient Production

    Formulators in modern agrochemical plants use this raw material during synthesis of protected intermediates for advanced herbicides and fungicides. Its predictable reactivity profile enhances product yield and structural selectivity, supporting the design of actives with improved environmental profiles. Compliance with regional registration protocols imposes strict analytical traceability from raw material introduction through to finished batch validation.

    Industry compliance standards

    • FAO/WHO Technical Guidelines for Pesticide Synthesis
    • OECD Good Laboratory Practice (GLP) principles for intermediates
    • REACH (EC) No 1907/2006 for registration of raw materials in Europe
    • US EPA Pesticide Registration (FIFRA)

    Typical usage ratio

    • Applied at 0.1–1.8 molar equivalents to pyrrole-containing targets
    • Adjusted according to desired purity and conversion rate during batch process design

    Downstream process integration

    • Utilized in sulfonylation steps in synthetic route development
    • Introduced before scale-up of active ingredient precursor
    • Facilitates selective functionalization to generate patentable molecule variants
    • Enables purification of intermediates by tailored extraction protocols

    Final product types

    • Sulfonyl-protected herbicide intermediates
    • Fungicide actives based on pyrrole scaffolds
    • Seed treatment microcapsules incorporating modified pyrrole derivatives
    • Shelf-stable concentrated technical materials for crop protection manufacturers

    3. Electronic Materials: Organic Semiconductor Synthesis

    Chemical engineers employ 1-Tosylpyrrole when synthesizing monomers and oligomers for use in advanced organic electronic devices. The compound's defined sulfonyl group enables precise molecular tuning of electronic and optical characteristics in specialty polymers and small molecules. Manufacturing integration focuses upon phase purity and reproducibility to meet the stringent yield and performance parameters demanded by the electronics industry.

    Industry compliance standards

    • IEC 62899-201 Electronic Print Materials Standards
    • RoHS Directive 2011/65/EU
    • IPC-4101/126C for high-performance base materials
    • ISO 9001:2015 for quality management in advanced material production

    Typical usage ratio

    • Used at 0.5–2.0 equivalents relative to initial monomer in condensation reactions
    • Refined based on required conductivity, polymer chain length, and electronic application

    Downstream process integration

    • Feeds directly into controlled polymerization and oligomerization steps
    • Supports functional group introduction for electronic interaction tuning
    • Facilitates further protection or deprotection before device fabrication
    • Allows for in-process analytical testing for batch consistency

    Final product types

    • Conjugated polymers for organic light-emitting diodes (OLEDs)
    • Semiconducting oligomers for flexible electronics
    • Hole-transport materials for photovoltaic cells
    • Printable organic inks for advanced circuit design

    4. Dye and Pigment Intermediate Manufacturing

    Producers in the specialty dyes sector select this intermediate to construct high-performance coloring agents where pyrrole moieties enhance lightfastness and color depth. Its ability to introduce sulfonyl protection on the pyrrole ring supports multi-step couplings and controlled chromophore assembly. Process control teams pay close attention to batch reproducibility and contaminant elimination according to industry guidelines for specialty colorant production.

    Industry compliance standards

    • ETAD Code of Practice (Ecological and Toxicological Association of Dyes and Organic Pigments Manufacturers)
    • REACH Regulation (EC) No 1907/2006 for pigment intermediates
    • ISO 9001 for quality management
    • GHS (Globally Harmonized System) labeling and safety compliance

    Typical usage ratio

    • Blended at 0.3–1.2 molar equivalents with dye core precursors
    • Modified based on target chromophore structure and subsequent deprotection demands

    Downstream process integration

    • Inserted during initial chromophore construction or post-synthetic modification
    • Enables color tuning through stepwise functionalization
    • Supports downstream coupling or fusion reactions for final pigment structure
    • Contributes to solubility and application properties of finished dyes

    Final product types

    • Pyrrole-based organic pigments for plastics and coatings
    • Colorants for automotive and industrial applications
    • Lightfast inks for specialty graphic arts
    • High-purity dye intermediates for textile industry supply chains
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    Certification & Compliance
    More Introduction

    Introducing 1-Tosylpyrrole: Reliability Rooted in Experience

    Over the past two decades, our team has watched the landscape of fine chemical manufacturing shift as new building blocks make their mark on synthetic routes across the globe. 1-Tosylpyrrole has consistently earned a place among these solutions, particularly for chemists seeking resilient intermediates that hold up during tough transformations. As a direct manufacturer, we shape each batch of this product from its earliest steps. Our facility’s equipment, processes, and standards reflect the reality that this compound often serves as the lynchpin in high-value synthesis, especially where precision and consistency speak louder than claims alone.

    Our Model: Precision from the Ground Up

    Throughout our production floor, you will not find shortcuts. Every step, starting with raw pyrrole selection, matters. We’ve tested dozens of sulfonylation methods, zeroing in on those that reliably deliver the para-substituted product with minimal side reactions. Our model for 1-Tosylpyrrole stands on this foundation. The clear, off-white powder you see in each drum owes its purity to multi-stage purification and in-line monitoring rather than late-stage rescue. Instead of depending on broad specification ranges, we dig deep into batch analytics. Consistent GC-MS profiles and sharp melting points reflect this focus. Year after year, returning clients point out how this attention simplifies their quality control and downstream processing. They know that off-spec sulfonation can waste more than just reagents—it derails timelines and budgets. We work with that reality every day and tune our approach to minimize surprises.

    Meeting the Real Demands of Synthesis

    Within the synthetic chemistry community, 1-Tosylpyrrole holds a distinct reputation as a stable, electron-rich pyrrole derivative. Its tosyl group lends the core structure both shelf stability and tunable reactivity. The protecting group kicks in as a workhorse during bromination, metalation, and cross-coupling steps. Often, researchers find frustrations with unsubstituted pyrroles: they oxidize quickly, react uncontrollably, or degrade during purification. The tosyl group solves these problems head-on, opening paths to more ambitious targets. Medicinal chemists across North America and Europe reach out with feedback on our product’s behavior, especially during N-deprotection under mild acidic conditions. They find that our 1-Tosylpyrrole resists byproduct formation and carries their campaigns from gram scale up to pilot runs without deviation. Small differences in purity or side-product content, which might get ignored at a catalog house, shift entire project outcomes on a kilo scale. We process every batch with this accountability in mind.

    How Our 1-Tosylpyrrole Stands Apart

    Stories filter back to us about supply chain hiccups when customers source 1-Tosylpyrrole from resellers or distributors. Not all products on the market begin in facilities with dedicated pyrrole production lines, rigorous solvent recovery, or real recrystallization capability. Our experience has shown that even small changes in residual solvents, particle size, or trace impurities make a difference in yield, catalyst compatibility, and isolation steps. Rather than relying on third-party claims, we own every analysis. Detailed batch histories—backed by in-house NMR, HPLC, and LC-MS—offer clarity instead of just listing “meets standard.”

    During conversations at technical conferences, process chemists tell us that 1-Tosylpyrrole from generic outlets sometimes contains problematic levels of mono- and di-tosylated byproducts, sodium salts, and colored impurities. These issues not only impact the next reaction but also clog equipment or sneak through to final APIs. In contrast, our approach involves incremental quality checks: real-time sampling, in-process TLC, and deliberate control of exotherms. Years of hands-on troubleshooting have taught us the subtle signs that matter—a faint yellow tint might not register on a standard assay, but it flags the need for a closer look. We carry this vigilance into every drum shipped from our site.

    Real Specifications Backed by Hands-On Expertise

    Self-manufacture means more than meeting contract specs. Lab managers often call us not just about routine analysis but for guidance on purification, solubility, or troubleshooting batch failures. We provide primary documentation directly from our instrument files. No detail gets glossed over. We record melting point ranges, dryness levels at time of packing, actual batch chromatograms, and solvent residues below industry detection thresholds. Consistency at scale results from repeatable attention to these concrete details. The pursuit for ever-narrower purity windows drives us to refine our workflow, adjusting reaction stoichiometry, optimizing temperature profiles, and extending drying cycles as necessary. This is not just technical compliance—it’s pride in material performance batch after batch.

    Supporting Diverse Applications in Research and Industry

    Increasing demand in both pharmaceutical research and specialty materials has tested the limits of the supply chain for protected pyrroles. Our 1-Tosylpyrrole addresses gaps that other sources have left open. Medicinal chemistry teams moving from screening hits to lead optimization value the ability to order quantities ranging from 100 grams to multi-kilogram lots, assured that the compound inside performs the same at every scale. Startups tackling polypyrrole-based materials reach out to us because our compound’s low ash and minimal residual acidity directly impact the electrical properties of their final products.

    Large pharma and academic groups alike have written us with specifics: “The batch from last fall worked flawlessly in copper-catalyzed coupling; the one from an alternate supplier decomposed immediately under the same conditions.” Such feedback anchors our process improvements. Many of our long-term partners began with a trial order to resolve chronic purification headaches and have since hardcoded our 1-Tosylpyrrole into their research pipelines. Reliable batches smooth out project timelines and bridge the gap from synthesis bench to process development. We recognize our role in enabling those successes and take that trust seriously.

    Addressing the Real-World Challenges

    Every year brings new regulatory scrutiny and unpredictable spikes in demand. As downstream requirements change, trace metals, solvent residues, and physical form increasingly come to the fore. Research-grade does not always cut it for commercial synthesis, and some customers turn to us because generic sources fail to provide rigorous documentation or batch-to-batch traceability. We stay prepared through redundant PLC controls on our reactors, automated drying protocols, and in-house analytical chemists who track impurity profiles. Instead of relying on batch end-testing, our process flags deviations before they reach finished goods. By planning extra capacity around campaign-based orders, we’ve managed to supply kilogram and multi-ton batches on tight lead times—even when regional logistics throw up roadblocks. This approach prevents inventory bottlenecks for our customers who need to move quickly from evaluation batches to plant scale. No single drum leaves our dock without a full suite of supporting analysis files, tailored to regulatory and project-specific requirements alike.

    Keeping Ahead of Industry Needs: True Manufacturer Perspective

    We build our forecast not just on sales targets but on the genuine pain points voiced by researchers, process engineers, and buyers. Rapidly evolving pipelines in pharma and advanced materials create surges in demand for niche intermediates like 1-Tosylpyrrole. Production bottlenecks at upstream sites, regulatory interruptions, and global solvent shortages expose weaknesses in the distribution chain. By operating as a vertically integrated supplier, we can diversify sourcing of key reagents, recycle solvents with assurance of no cross-contamination, and maintain granular visibility over every batch. This level of control simply does not exist in models that split manufacturing and distribution between multiple parties.

    Product development in fine chemicals rewards those who take close ownership. New chemistries—whether in macrocycle assembly, cross-coupling, or specialty polymer synthesis—challenge our material’s reactivity limits. Recently, several collaborators explored modified conditions for aromatic halogenation on the tosyl group, using our product for benchmarking. None reported off-odors, colored isolates, or problematic emulsion formation. In fact, they sent us requests to scale up those same chemistries with the direct assurance that our baseline quality reduces reoptimizations and analytic failures. As feedback funnels back from these projects, we feed new requirements into our standard protocols and keep our process nimble, so each batch never just repeats the past but reflects where the industry stands now.

    Looking Closer: 1-Tosylpyrrole versus Other N-Protected Pyrroles

    There are multiple routes to pyrrole protection, but not all protecting groups serve each application equally. N-Boc and N-Ts stand as the most common, each with clear tradeoffs. Our manufacturing experience has made us keenly aware of these distinctions. N-Boc protection, although favored for its acid lability, can bring fragility and complications when exposed to bases, or in high-temperature conditions. Customers report that the Boc-protected material shears off or decomposes during metalation, often resulting in costly rework and lost time. Some substrates react more easily with N-Boc, but many catalytic transformations prefer the robustness of N-Ts. The tosylpyrrole, once isolated, resists harsh oxidations, heavy metals, and acidic or basic wash steps without screening off into intractable side products. Its crystalline form, not hygroscopic, stores and ships without incident, even in remote locations without climate control. Feedback from our partners confirms this repeatedly—the N-Ts group outlasts alternatives under conditions needed in cross-coupling, bromination, or Suzuki reactions. Costs might be slightly higher per gram, but the risk reduction pays off with fewer surprises and less downtime.

    Life on the production floor brings a practical perspective. We see that some labs tolerate a looser protection if speed outweighs precision, but clients moving into regulated markets or scaling to GMP campaigns settle on 1-Tosylpyrrole because its impurity profile and physical handling match tighter requirements. N-sulfonyl pyrroles offer more than just protection—they serve as reliable stepping stones in amide coupling, macrocycle synthesis, and new material development. The consistent crystalline quality stems from real process design, not simply meeting an abstract certificate of analysis. We limit batch sizes purposefully to retain analytical oversight and avoid drift. It takes more care upfront, but it pays dividends in zero rejections at the client’s facility.

    What Sets Our Product Apart Beyond Paper Specifications

    Some might believe that any lab-synthesized 1-Tosylpyrrole can meet a project’s needs as long as nominal purity exceeds 98 percent. Our track record says otherwise. Our clients regularly report that small discrepancies in form, such as trace crystallization solvents or subtle differences in particle size distribution, can drastically affect filtration and downstream yield. Bulk shipments from us, sealed and stabilized via nitrogen flush, have enabled groups—especially those running continuous flow or high-throughput screening—to maintain batch consistency throughout yearly campaigns. This practical support saves time otherwise lost on secondary purification, remaking solutions, or pausing production to chase impurity signatures. We skip the smoke-and-mirrors of creative language and focus on eliminating potential headaches before the product ships.

    Visitors touring our facility often comment on the clarity of our batch records and our open-door policy around deviation investigations. Our technical team routinely advises new customers, offering transparent feedback based on their use case. This exchange informs improvements both in our equipment and documentation. One customer, scaling a key C–H functionalization, sent samples of failed runs from another supplier’s material. Our analysis picked out trace levels of sodium and oxidized side-products that had gone unnoticed elsewhere. Changes in the competitor’s process, invisible on standard inspection, had derailed their synthesis. In light of these findings, we improved our own in-line aqueous washes and requalified drying parameters, closing the feedback loop while supporting their project with a direct solution.

    Practical Use Cases from the Field

    Process chemists and development teams often deploy 1-Tosylpyrrole as an electrophilic partner or as a stabilized nucleophile. In our experience, the compound offers significant stability during stepwise additions, multicomponent couplings, and process-scale reactions that punish less-stable intermediates. For those venturing into medicinal and agrochemical research, the ability to reliably deprotect and derivatize pyrroles shapes entire compound libraries. We frequently consult on scaling up N-Ts deprotection or streamlining coupling chemistry, offering empirical know-how rather than generic advice. Our track record includes support for pivotal drug intermediate synthesis and academic group efforts to push pyrrole scaffolds in photochemical and polymer applications. Each application comes with unique process constraints, and direct manufacturer support minimizes setbacks that stem from subtle reagent variation.

    Future Directions: Rising to New Challenges Together

    Looking down the pipeline, the chemical industry demands new levels of reliability and transparency. As environmental oversight tightens and new downstream applications proliferate, the margin for error in upstream intermediates like 1-Tosylpyrrole continues to shrink. Our company works ahead of regulatory curves by tightening source control, automating hazardous steps, and continually revalidating our analytics. We foster ongoing relationships with customers—not just as suppliers but as collaborative partners. New requests spur us to reevaluate our internal standards, invest in better monitoring, and balance increasing demand with sustainable process improvements.

    A true manufacturing commitment proves its value during high-pressure moments. When disrupted logistics, shifting process requirements, or regulatory audits test the system, customers turn to direct producers who deliver consistency, clarity, and practical solutions. Our production of 1-Tosylpyrrole stands as a testament to what results from hands-on ownership, deep analytical experience, and integrity at every level of production. Whether tackling next-generation synthetic challenges or supplying routine multikilogram campaigns, we remain dedicated to keeping research and industry moving forward—batch after batch, year after year, backed by insight and tangible results.