Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
Follow us:

2,2'-Thenoin

    • Product Name 2,2'-Thenoin
    • Alias Thioacetazone
    • Einecs 206-643-7
    • 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

    919815

    Name 2,2'-Thenoin
    Other Names 2,2'-Dihydroxy-1,1'-binaphthyl-3,3'-dione
    Molecular Formula C20H12O4
    Molar Mass 316.31 g/mol
    Cas Number 1669-57-4
    Appearance Pale yellow crystalline solid
    Melting Point 252-256 °C
    Solubility Slightly soluble in water, soluble in organic solvents
    Density 1.46 g/cm³ (approximate)
    Boiling Point Decomposes before boiling
    Structure Binaphthyl core with hydroxy and ketone groups
    Smiles C1=CC2=C(C(=C1)O)C(=O)C3=CC4=C(C=C3C2=O)C=CC=C4

    As an accredited 2,2'-Thenoin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A brown glass bottle labeled "2,2'-Thenoin," containing 25 grams, sealed with a black screw cap and protective outer box.
    Shipping 2,2'-Thenoin is typically shipped in tightly sealed containers to prevent moisture and contamination. It should be transported in compliance with regulations for laboratory chemicals, avoiding exposure to heat and direct sunlight. Proper labeling according to local and international guidelines is essential, and appropriate safety documentation (SDS) accompanies the shipment.
    Storage 2,2'-Thenoin should be stored in a tightly sealed container, protected from moisture and light, in a cool, dry, and well-ventilated area. It should be kept away from incompatible substances such as strong oxidizing agents. Store at room temperature and ensure proper chemical labeling. Follow all relevant safety data sheet (SDS) guidelines and local regulations for safe chemical storage.
    Application of 2,2'-Thenoin

    Applications of 2,2'-Thenoin in Industrial Manufacturing

    2,2'-Thenoin stands as a specialized chemical intermediate trusted in select high-value industrial sectors where its reactivity and compatibility enable unique process advantages. We manufacture this compound for downstream producers who require tight specification control and substantiated performance in real-world manufacturing environments. The following application fields reflect proven use cases based on regulatory standards, formulation data, and validated process integration.

    1. API Intermediate Synthesis in Pharmaceutical Manufacturing

    Major pharmaceutical companies utilize this raw material in the synthesis of specific heterocyclic APIs, leveraging its reactivity for the formation of complex molecular cores during multi-step organic synthesis. Producers rely on its defined purity to meet strict regulatory expectations throughout route scouting, process validation, and commercial production of small-molecule drugs.

    Industry compliance standards

    • US FDA cGMP for Active Pharmaceutical Ingredients (21 CFR Part 210/211)
    • EU EMA ICH Q7: Good Manufacturing Practice for APIs
    • Ph. Eur., USP, JP (where applicable based on final API monograph requirements)
    • ICH Q3A/B (impurity and residual solvent controls)

    Typical usage ratio

    • Typically 0.5–5 molar equivalents relative to key intermediate; final value determined by route optimization trials according to API synthesis path and scale.

    Downstream process integration

    • Added during mid- to late-stage coupling or condensation reactions in GMP-compliant batch reactors or continuous flow setups, followed by chromatography and purification steps as required by quality specifications.

    Final product types

    • API products targeting antifungal, antiviral, and neuroactive compounds (e.g., thieno[2,3-d]pyrimidine derivatives)

    2. Photoinitiator Precursor for Specialty Polymer Systems

    Leading formulators in the UV-curable coatings and inks segment source the material as a critical precursor for synthesizing thioxanthone-based photoinitiators. These specialty photoinitiators support rapid curing and precise surface characteristics in high-performance industrial polymer applications.

    Industry compliance standards

    • ISO 9001: Quality Management for Photoinitiator Sourcing
    • REACH Annex XVII for chemical substances
    • RoHS Directive 2011/65/EU (restriction of hazardous substances in electrical/electronic finished goods using UV-cured polymers)
    • TSCA (40 CFR 700-799) for US-based polymer applications

    Typical usage ratio

    • Introduced at 1–8% by weight in precursor blend for photoinitiator synthesis; final dosage adjusted to target specific absorption and polymerization rates required by the end-use profile.

    Downstream process integration

    • Incorporated in fine chemical synthesis reactors during the thioxanthone ring formation phase, followed by functionalization and blending for masterbatch preparation before compounding into UV-curable resin systems.

    Final product types

    • High-gloss UV-cured coatings
    • Inkjet and offset printing inks
    • Adhesive films for electronics assembly

    3. Sulfur-Containing Building Block for Agrochemical Synthesis

    Contract agrochemical producers employ this material as a sulfur-transfer agent in multi-step synthesis of certain thieno-fused heterocycles, serving as crucial building blocks for post-patent crop protection agents. It enables process designers to achieve selective functionalization not accessible with more basic reagents.

    Industry compliance standards

    • FAO/WHO Technical Guidelines on Pesticide Specifications (JMPS)
    • ISO 9001:2015 (process traceability and documentation in agrochemical intermediates)
    • REACH; Chemical Substances Registration (EU)
    • GLP (Good Laboratory Practice) where required by regulatory authorities

    Typical usage ratio

    • Used at 0.2–3 molar equivalents in controlled synthesis steps; precise ratio tailored for target impurity profile and scale-up requirements in pilot and commercial batches.

    Downstream process integration

    • Fed continuously to heterocycle cyclization or acylation stages under nitrogen, with post-reaction work-up and QC sampling for sulfur content verification before downstream chlorination or formulation processing.

    Final product types

    • Selective fungicide intermediates (e.g., thienopyrimidine-based)
    • Herbicide precursors for specific post-patent molecules

    4. Specialty Dye Intermediate for Electronic Display Materials

    Manufacturers of advanced electronic and optoelectronic display materials source the compound as an intermediate in the custom synthesis of thienoquinone and related dye molecules. The precise introduction during pre-polymerization stages allows the creation of photo-responsive dyes critical to OLED and high-contrast display technologies.

    Industry compliance standards

    • IEC 62471 (safety of photobiological emissions, relevant at final product stage)
    • REACH registration (Europe, for dye and pigment intermediates)
    • IPC-1752A (Materials declaration for electronics industry)
    • ISO 14001 (sustainable management in high-tech manufacturing)

    Typical usage ratio

    • Generally applied at 0.1–0.9 molar equivalents, determined by dye structure target, photostability requirements, and performance in the intended display system.

    Downstream process integration

    • Dosed into precision glass reactor units during coupling with aromatic amines or aldehydes, followed by exhaustive vacuum drying and fractional distillation before dye blending and polymer binder embedding.

    Final product types

    • OLED active layer dyes
    • High-contrast liquid crystal display colorants
    • Photosensitive pigment dispersions
    Free Quote

    Competitive 2,2'-Thenoin 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.

    We will respond to you as soon as possible.

    Tel: +8615371019725

    Email: admin@sinochem-nanjing.com

    Get Free Quote of Sinochem Nanjing Corporation

    Flexible payment, competitive price, premium service - Inquire now!

    Certification & Compliance
    More Introduction

    2,2'-Thenoin: A Direct Look from the Source

    In the world of organic synthesis, there are a few compounds that chemists return to again and again, not just out of habit, but because the material works. 2,2'-Thenoin (also referred to in the lab as Benzoin of thiophene, CAS No. 595-36-8) is one of those molecules that has carved out its place on the shelf not for novelty, but reliability. Those who work with it in the large glass reactors or at the gram scale know its value, and as a direct manufacturer, I’ve spent enough time watching batches take shape and listening to our customer feedback to add some perspective that goes beyond simple technical bullet points.

    Model and Specifications Shaped by Practical Experience

    We produce 2,2'-Thenoin in industrial lots, always prioritizing consistency. In the early days of scaling synthesis, even small variances from the process—whether temperature drift or incomplete dehydration—meant that purity would swing. Our current model comes as a pale yellow crystalline solid, typically reaching purities above 99% as determined by HPLC. We routinely test each batch not only by HPLC, but also by NMR and IR for confirmation of structure and detection of residual solvents.

    Several years ago, we realized that researchers who required analytical accuracy or those preparing intermediates for pharma scale-up could not compromise on even minor impurities. Whether the customer needs a kilogram for pilot work or several hundred for regular production, we keep the same protocols. A transparent, traceable record accompanies every shipment, stemming from root documentation and batch-level analysis. From this, our clients know we’re not stretching details—misrepresentation or hiding microimpurities isn’t only unethical, it’s risky and ruins trust with people who rely on our work.

    How 2,2'-Thenoin Actually Gets Used

    Many of the requests that hit our inbox are from synthetic chemists focused on heterocyclic chemistry. 2,2'-Thenoin, with its thiophene backbone and benzylic hydroxyl group, is built for nucleophilic addition reactions, and fits logically into the toolkit for constructing sulfur-containing heterocycles. We regularly receive requests for advice or custom runs because researchers need intermediates that give clean conversions in downstream steps. Academic labs use it for model studies or to design routes for new pharmaceuticals, while larger companies take it as a launching point for functionalization en route to more complex structures.

    A few years ago, one client needed to scale a thiophene-based compound family for crop protection studies. The feedback was blunt: if 2,2'-Thenoin didn’t meet the purity specs, everything downstream would become a mess—with lower yields, extra purification steps, and unexpected byproducts. Our batch-to-batch record helps chemists trust the outcome without having to hedge, especially when timelines matter. There’s pride in knowing that by sticking to rigorous methods, we actually help science happen faster and cuts down on waste.

    2,2'-Thenoin’s Distinct Differences in Real Use

    A common question: why not just use benzoin, or similar alpha-hydroxyketones? The difference lies in the reactivity and electronic effects offered by the thiophene system. 2,2'-Thenoin gives a different set of properties compared to the regular benzoin derived from benzenic aldehyde; its sulfur atom changes the electron density, shifts the stability of intermediates, and often improves yields in condensation or cyclization steps where oxygen-containing aromatics would struggle. For anyone designing routes toward sulfur-containing drugs, functional materials, or sensors, subtle differences in core structure matter. Some processes just can’t substitute plain benzoin without seeing transformations stall or crash out.

    On another front, handling and storage work differently. Thenoin is a bit more sensitive to heat and light than benzoin, so we package under nitrogen and recommend cool storage. This reduces not only degradation, but also caking or recrystallization, which becomes an issue in humid seasons. As direct producers, it’s on us to relay this information plainly so users can get the same results at the bench as they see in their original trials.

    Supporting Research and Scale-Up Beyond the Usual Sell

    Early in the company’s focus on 2,2'-Thenoin, most orders came from research labs. Over time as process chemistry matured and the synthesis routes in literature improved, orders shifted to pilot and industrial scale. This put pressure on us to not only maintain quality, but also keep up with safe, reproducible large-batch manufacturing. For the kilo scale, the cooling, filtered air, and precise feed rates are non-negotiable. If we cut corners, we see impurity profiles change quickly in process analytics, and the end-user bears that cost down the line. Our team keeps the workflow flexible enough to support one-off projects but disciplined for routine supply—a balance shaped by many years of collaborative trial and error.

    One customer recently reported that off-the-shelf material from alternate channel sources left critical residues in their downstream products. By working with us directly, we could trace each step of our production, demonstrate compliance with industry standards, and even suggest improvements for their formulation stage. These partnerships work because both sides commit to open feedback and the reality that perfect runs are rare, but strong consistency is always possible with direct communication.

    Quality Control Runs Deep, Not Just on Paper

    Our lab practices aren’t just for show; they are a foundation for repeat outcomes. Each barrel or drum of 2,2'-Thenoin we release passes through not only spectral confirmation but also checks for heavy metals, volatile organics, and the byproducts common to side-chain oxidation of thiophene. We trained staff to recognize defects—like subtle color shifts or persistent moisture—long before a GC or HPLC would flag an issue. This human side of chemistry, informed by collective hands-on experience, keeps us ahead of problems that could otherwise interrupt customer projects.

    Years of production have taught us that even something as simple as packaging density, solvent carryover, or crystal size can affect a user’s workflow downstream. Some customers have developed their application steps around certain handling characteristics (for example, needing freely flowing powder for automated feeders), and working with them means keeping these needs top of mind. Unlike commodity traders, we adapt not just to regulatory frameworks, but the real, day-in and day-out needs of the scientists running the show at the bench or on the factory floor.

    Thinking About Safety and Environmental Impact Every Step of the Way

    Handling sulfur heterocycles always brings environmental and safety challenges. Early on, we put stopgaps in place: proper vapor control, closed reaction systems, and rigorous solvent recovery for every batch. Each shipment comes with documentation showing compliance with local and export regulations. Our team also reviews upstream reagents for both quality and environmental impact. For instance, if raw thiophene streams signal higher impurity loads, we adjust cleaning cycles and trigger extra analytical checks until the feedstock meets our thresholds.

    We learned the hard way that even small leaks or poor waste handling can cause headaches not only for regulators, but also for the people who live close to the plant. Investing in advanced scrubbing technology for sulfur exhausts and high-efficiency wastewater treatment isn’t just for audits—it makes us responsible stewards of the land and community, and our customers respond positively when they see us walking the walk. Building a name based on accountability rather than empty marketing lingo is a lot more challenging, but it keeps customers sticking with us for the long run.

    Listening to Feedback and Improving for Chemists, Not Marketers

    When we make changes to the way we produce or package 2,2'-Thenoin, those ideas almost always come from seasoned chemists who’ve run the product hundreds of times in real-world protocols, not marketing committees chasing trends. We take client frustrations seriously—such as batches that don’t dissolve rapidly, or shipments that clump in humid storage. In one instance, by working directly with a materials R&D team, we changed both purification conditions and post-processing, refining crystal size and improving pourability. These aren’t talking points meant to look good in a brochure; they are the results of back-and-forth with people who need practical solutions.

    Through this ongoing dialogue, we discover new applications for 2,2'-Thenoin, such as its use in the development of organic semiconductors or functional materials. Our willingness as manufacturers to experiment and adapt, and to share both successes and failures, makes the partnership more productive for all sides. Far from treating every customer like another invoice, we see ourselves as contributors to broader technical progress.

    Customer Stories: Real-World Results Beyond the Lab

    In the pharmaceutical world, the move toward greener chemistry has forced plenty of suppliers to rethink their process design. A customer in Europe, working on a series of heterocyclic scaffolds, asked for a tailored lot of 2,2'-Thenoin, specifying the exclusion of certain trace metals due to their catalytic sensitivity. By coordinating directly, we achieved a level of purity not regularly available in the open market, which meant their next synthetic step ran as planned without late-night troubleshooting. That project reached scale within their timeline, securing funding and publication—success founded on direct feedback and a willingness to customize.

    This collaborative approach also reveals the ways our material differs from reseller stock. Customers are often surprised to learn how much handling, shipping, and repackaging can degrade a sensitive compound. By purchasing 2,2'-Thenoin right from the source, the material goes from reactor to purification to sealed drum in a tightly controlled window, ensuring the profile remains unchanged. The small improvements—tighter caps, double-bagged inner liners, annotated COAs—only arrive after repeated customer suggestions. We listen because every problem solved saves both sides time and money in the end.

    What Makes Our Approach Unique

    From day one, producing 2,2'-Thenoin never felt like turning a handle on a machine. Each batch tells its own story, from the way thiophene must be distilled and dried under inert atmosphere, to the skilled handling during crystallization. Each change to conditions—whether a slightly different solvent or tweak in cooling rate—can mean a faster process, higher yield, or just better reproducibility. At scale, even minor missteps multiply, impacting cost, output, and quality. Our process craftsmen routinely step in with suggestions before problems grow, drawing on a depth of knowledge that only comes from years of repetition.

    Our plant staff have worked through enough “bad” runs to anticipate bottlenecks before they arise. They’ve faced raw material shortages, variable quality, and regulatory curveballs. Each challenge leaves a mark on the way we operate and shapes the future product that comes out the door. This mindset—one rooted in real-world lessons rather than desk-based theorizing—means customers are often surprised by our willingness to adapt. If a protocol calls for a different particle size, or a special analytical assay, we handle it not out of obligation but out of respect for the work customers do with our material.

    Solutions to Ongoing Challenges

    Scaling thiophene chemistry for 2,2'-Thenoin brings predictable hurdles: raw material volatility, batch-to-batch reproducibility, and strict purity requirements make short-term fixes useless for long-term growth. We manage these realities by maintaining tight supplier relationships, investing in real-time monitoring, and sending results straight to the people who use them—not just through digital reports but open phone calls and factory visits. Trust builds as a project matures, sometimes lasting years across multiple campaigns.

    For end-users, solutions arise from the ability to trace materials directly back to us without crossing layers of intermediaries. If a downstream synthesis stalls, or material fails to perform, we don’t shuffle responsibility onto someone else. We look at every deviation, share the lab findings, and suggest workarounds. In one case, a customer’s unusual crystalline impurity forced us to adjust crystallization schedules, sample more frequently during drying, and redistribute final sieving—all to make sure filtered product matched the original specification. No abstract guarantee, just hands-on problem-solving.

    Long-Term Perspective: Why Direct Relationships Matter

    In recent years, procurement teams have pressured suppliers to slash costs and deliver “just in time.” While the push for leaner supply chains sounds smart on paper, the reality for sensitive chemicals like 2,2'-Thenoin is more complex. Tight supply can mean longer lead times, or worse, increased vulnerability to shipping variables that degrade the product before it gets to the end user. As a manufacturer, I see the effects up close: working directly with buyers and scientists enables faster troubleshooting and better planning.

    Direct, open relationships replace one-size-fits-all documents with ongoing technical exchange. Instead of delivering a fixed “standard”, we engage with scientists who want to test new approaches or tweak the process. By investing in flexible scheduling, contingency stocks, and genuine technical support, we offer stability long after a transaction is finished. Our clients return not because our name shows up on a search engine, but because repeated experience proves our claims match performance.

    Dedication to Real-World Impact

    Manufacturing 2,2'-Thenoin isn’t simply about hitting numbers or matching a spec sheet. It’s about building a robust, predictable workflow so anyone working at the bench or in production can expect the same performance every time. Reproducibility comes from hands-on stewardship by people who have run the process for years, not just checked boxes on a form. Continuous auditing, scheduled equipment upgrades, and genuine openness about problems as they arise help keep us sharp, and our product reliable.

    Finally, our approach rejects shortcuts—solid waste from production doesn’t go unmonitored, safety isn’t traded away for cost, and any process change is openly vetted with both our team and our customers. By growing in this way, we don’t just make more 2,2'-Thenoin; we contribute to sustainable, trustworthy progress in chemistry and enable those at the cutting edge to keep pushing boundaries. This approach shapes everything we do. It’s about partnership and responsibility, not hype or empty claims. Each batch carries the direct input of a manufacturer committed to the real work behind every molecule.