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4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile

    • Product Name 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile
    • Alias 4-Hydroxy-3,5-dimethylbenzonitrile
    • Einecs 217-442-2
    • 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

    625739

    Chemical Name 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile
    Molecular Formula C9H9NO
    Molecular Weight 147.18 g/mol
    Cas Number 637-15-8
    Appearance Off-white to light beige solid
    Melting Point 114-118 °C
    Solubility In Water Slightly soluble
    Synonyms 3,5-Dimethyl-4-hydroxybenzonitrile
    Structure Smiles CC1=CC(=C(C=C1O)C#N)C

    As an accredited 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Packaged in a 25g amber glass bottle with a secure screw cap, labeled with product name, purity, hazard symbols, and supplier details.
    Shipping 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile is shipped in tightly sealed containers, protected from light and moisture. Packaging complies with chemical transport regulations to prevent leaks or contamination. Appropriate hazard labeling is used if necessary. Shipping is generally conducted via ground or air under controlled temperature conditions, according to the compound’s safety and regulatory requirements.
    Storage Store **4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile** in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances such as oxidizers and acids. Protect from moisture, direct sunlight, and sources of ignition. Ensure that storage areas are equipped with proper spill containment and that only trained personnel have access to the chemical. Label containers clearly to avoid confusion.
    Application of 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile

    Applications of 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile in Industrial Manufacturing

    4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile serves as a specialized intermediate in several chemical sectors where stringent quality and process control standards are essential. Below, we detail key downstream industrial applications based on direct manufacturing practices and supply chain integration.

    1. Pharmaceutical Intermediate for Antihypertensive Synthesis

    This compound plays an integral role in synthesizing certain 1,4-dihydropyridine-class antihypertensive agents. Its reactive hydroxy and nitrile groups undergo condensation during heterocyclic ring formation. Manufacturers operate in strict compliance with global pharmacopeial protocols and quality management systems, ensuring each batch meets the trace impurity limits demanded by the finished API sector.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia (Ph. Eur.) monographs for chemical purity
    • US FDA 21 CFR Part 211 (Finished Pharmaceuticals)
    • ISO 9001-certified Quality Management Systems for API manufacturers

    Typical usage ratio

    • Used at 0.6 to 1.2 molar equivalents per target API batch, depending on reaction yield rate. Adjust the charge based on impurity profiling and recovery efficiency.

    Downstream process integration

    • Added during the pyridine core-building stage by solution-phase condensation with acetoacetate derivatives, followed by controlled cyclization and subsequent hydrogenation.

    Final product types

    • Amlodipine and related 1,4-dihydropyridine antihypertensive APIs
    • Secondary pharmaceutical intermediates for bulk drug manufacturing

    2. Intermediate for Agrochemical Synthesis

    Manufacturers in the agrochemical sector use this molecule for constructing selective herbicide and fungicide structures. The dimethyl and hydroxy functionalities contribute to increased activity and stability of specific pyridine-based and benzene-derived agrochemicals. Production batches require tight control of residual solvents and trace by-products in compliance with international agrochemical registration standards.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • OECD Guidelines for the Testing of Chemicals
    • Good Laboratory Practice (GLP) for pesticide raw material synthesis
    • REACH (EC 1907/2006) requirements for impurity control and safe handling

    Typical usage ratio

    • Applied at 0.8–1.1 equivalents relative to acylating agents in the core agrochemical build. Adjust according to active ingredient conversion rate in continuous or batch synthesis.

    Downstream process integration

    • Introduced during the aromatic acylation and alkylation sequence prior to esterification or halogenation, using solvent-phase processing and careful pH adjustment to limit side reactions.

    Final product types

    • Precursor for pyridine-based herbicides and fungicides
    • Synthons for selective insecticides in crop protection

    3. Dye and Pigment Intermediate Production

    Producers of high-performance dyes and pigments utilize this raw material to introduce electron-donating groups into aromatic systems, enhancing chromophore stability and process compatibility. The compound supports color-fast and temperature-stable dye production required for specialty textile and polymer applications. Precise batch documentation and hazardous substances control remain critical, reflecting downstream user and regulatory requirements.

    Industry compliance standards

    • Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)
    • OEKO-TEX® Standard 100 for textile dye raw materials
    • ISO 9001 Quality Management for pigment and dye manufacturing
    • Standard 49 CFR 172.101 for regulated hazardous materials

    Typical usage ratio

    • Utilized at 2.5–7% by mass in key intermediate blends, depending on final dye intensity and application end-use (textile, plastics, specialty coatings).

    Downstream process integration

    • Hydroxy and nitrile moieties undergo diazotization or coupling reactions early in the pigment synthesis process, prior to precipitation and granulation.

    Final product types

    • Azo dyes for polyester and cellulose fabrics
    • Heat-resistant pigments for plastics and coatings

    4. Photoinitiator Precursor for UV-Curing Systems

    Producers of UV-curable coatings, inks, and adhesives incorporate this chemical as an aromatic building block during photoinitiator synthesis. Its substitution pattern stabilizes the radical generation needed for consistent polymerization under UV exposure. The resulting photoinitiators must meet strict migration and extraction tests for compliance, especially where food or medical packaging is involved.

    Industry compliance standards

    • US FDA 21 CFR 175.300 (for coatings in contact with food)
    • Swiss Ordinance SR 817.023.21 (Materials and Articles in Contact with Food)
    • ISO 22000 Food Safety Management Systems (for relevant packaging)
    • GMP for packaging materials

    Typical usage ratio

    • Combined at 0.4–1.5 equivalents in the initial photoinitiator synthesis step, with variation based on photoinitiator type and target resin compatibility.

    Downstream process integration

    • Condensed with benzophenone or similar cores via Friedel-Crafts or nucleophilic aromatic substitution during the photoinitiator synthesis, followed by purification and standardization.

    Final product types

    • 1-hydroxy-cyclohexyl phenyl ketone–type photoinitiators
    • UV-cured industrial coatings and inkjet ink systems

    5. Advanced Polymer Stabilizer Synthesis

    This chemical provides essential building blocks for hindered phenolic antioxidants used as stabilizers in engineering plastics and elastomers. The specific positioning of hydroxy and methyl groups improves compatibility and efficiency in oxidative degradation inhibition during polymer processing. Producers must monitor process contaminants and certificate of analysis (COA) to comply with global material standards.

    Industry compliance standards

    • EU Regulation (EU) No 10/2011 on plastic materials intended for food contact
    • ASTM D5510 for evaluation of antioxidant effectiveness
    • ISO 14001 Environmental Management for polymer supply chain
    • UL 94 (Flammability testing of polymeric materials)

    Typical usage ratio

    • Used at 0.2–1.0% by weight in stabilizer masterbatches for final polyolefin or engineering resin blends. Adjust the addition based on oxidative induction time and polymer processing conditions.

    Downstream process integration

    • Enters the synthesis of phosphite or hindered phenol antioxidant compounds via alkylation and condensation, then compounded with polyolefin resins in twin-screw extruders for uniform dispersion.

    Final product types

    • Hindered phenolic antioxidants for PP, PE, ABS, and engineering plastics
    • Polymer masterbatches for wire, cable, film, and molded goods
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    Certification & Compliance
    More Introduction

    4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile: Practical Insights from Our Factory Floor

    At the plant, 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile always stands out in our line of aromatic nitriles. Years of handling specialty chemicals have given us a close perspective on the qualities that matter most to customers who expect no-nonsense performance. We offer this compound with a purity that helps chemists avoid headaches when targeting high yields in their custom syntheses, and we understand the tricks of the trade—how batch consistency shapes results, how minor impurities foul up all kinds of downstream reactions, and what it takes for a material to prove itself on the bench.

    Model and Specifications: What Sets Ours Apart

    We manufacture 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile under a controlled synthesis route, making use of high-specification raw materials. Our typical lot purity registers at over 99%, verified through both HPLC and NMR analysis, ensuring minimal levels of byproducts such as methylated phenols or cyano isomers. We pack it in industry-standard containers, sealed against moisture and light to protect shelf life. Granule size follows a consistent distribution to help with weighing and transfer – clients tell us this reduces static clumping on their balances, which comes as a relief when handling large orders in automated lines.

    The melting point holds steady within a narrow band, a sign that micro-impurities are kept at bay. We document every kilogram, tracking batch identity, rechecking with QC before shipment. This kind of vigilance helps prevent surprises for formulation chemists, particularly those scaling up from pilot to commercial runs. We know that timelines depend on reliability, and startup delays ripple unhelpfully through the project calendar.

    Core Applications: Utility in Synthesis and Industry

    Our colleagues on the application support team keep their ears to the ground, learning from formulators and process chemists how 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile fits into their day-to-day workflows. Most customers buy it as a building block for advanced aromatic chemistry. The hydroxy group, paired with the electron-withdrawing nitrile, makes the ring an attractive scaffold for further functionalization. Medicinal chemistry teams, in particular, lean on its clean profile to help assemble pharmacophores: When they’re screening analogs, they need less noise in their assay plates and fewer surprises during purification. Those who push into agrochemical discovery rely on the same molecular traits—having both methyl and nitrile groups on the ring brings flexibility when designing new bioactive structures.

    Material science labs also appreciate this compound. Its stability under common conditions means it serves as a predictable component in specialty polymers or resins, and its structure contributes to color-fastness or resistance to photodegradation in coatings work. Years ago, we saw a spike in interest from companies exploring advanced liquid crystal formulations, drawn by the hydrophobicity and substitution pattern of our product. We observed that some polymer chemists prefer it over less stable or more volatile ring systems for similar reasons: predictable incorporation and clean thermal behavior.

    Comparison with Related Aromatics: What Experience Has Taught Us

    We field frequent questions: “Why not just use regular 4-Hydroxybenzonitrile or another dimethyl phenol?” Our chemists have run those head-to-head tests. The presence of both methyl substituents at the 3 and 5 positions modulates electron density around the ring, tuning reactivity in a way that pure 4-hydroxybenzonitrile does not accomplish. Substitution like this can suppress unwanted side reactions, particularly in metal-catalyzed couplings or directed ortho-lithiation steps, a detail that practitioners notice once their project passes the gram scale. To those who operate kilo plants or multipurpose synthesis modules, less byproduct translates directly to easier clean-up—fewer hours spent on silica columns, less spent solvent, less risk of contaminating downstream intermediates.

    Comparing it to similar molecules such as 3,5-dimethylphenol or 4-cyanophenol, we find our product handles moisture and storage stress better over months. The nitrile group stabilizes the structure against oxidative degradation. End-users targeting SAR (structure-activity relationship) explorations for medicinal lead finding value in that blend of aromatic stability and tailored electron density it brings. In the plant, we avoid the excessive odor and volatility associated with lower molecular weight aromatics, resulting in a more pleasant—and safer—work environment for handling.

    Production Challenges and Lessons Learned

    Scaling up 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile presented its own set of challenges. Early on, we ran into purity issues as small as one-tenth of a percent affecting downstream product color and crystallinity. Our team responded by instituting in-line monitoring steps at multiple points throughout the batch process: infrared spectroscopy after nitrile introduction, GC analysis of distillate, and a final solid-state NMR check. Some industry partners might skip those steps to save on turnaround, but we measure every stage, since one off-batch reverberates through customer production lines and costs everyone more time in the end. As a manufacturer, every day spent on quality assurance saves us from late-night troubleshooting calls and longer-term reputational risk.

    Waste minimization always concerns us. Over the years, we’ve tightened process integration – recovering methylated byproducts, capturing excess solvents for reprocessing, and switching to greener oxidants. In conversations with environmental auditors, we share what we've learned about optimizing reaction yields: greater conversion rates mean less off-spec waste to treat, translating to lower disposal fees and safer work routines for our staff. We keep detailed logs and have responded to client requests for more transparency on process improvements, because large downstream buyers increasingly factor source sustainability into their procurement strategies.

    Customer Experience: Listening, Adapting, Improving

    One thing about being a manufacturer: you learn a lot by listening. Our sales and technical teams share real feedback from the field. For example, a leading agrochemical company mentioned caking issues during long storage in humid climates. That observation led us to revisit our drying protocols and double-check the desiccant loads in shipment. We found that batch-to-batch consistency on particle size was more important than we realized for customers employing automated pre-weighing systems. Acting on their reports, we fine-tuned both our sieving process and our packaging specification, helping reduce downtime and waste for those end-users. We document all such changes to help purchasers meet audit or regulatory review without friction.

    In the specialty chemical world, customer requirements shift faster than most people expect. Global regulations evolve, market needs adapt. For our part, we keep a close watch on industry changes—whether it’s a new REACH restriction or a different purity threshold demanded by pharma clients. We have made it a habit to test every lot against both the strictest specification presently in force and any foreseeable new standards, even if only a minority of our buyers require it. By adopting higher standards before they are mandatory, we’ve avoided emergency retrofitting and last-minute rush jobs, which upset both production lines and working hours.

    Industry Standards and Compliance: Our Approach

    Quality management shapes every phase of our process. Certifying to ISO 9001 quality standards was not merely a paperwork exercise for us but a matter of day-to-day discipline on the production floor. Our internal guidelines match, and often exceed, what’s required under prevailing international regulations. Regular audits and self-inspections, including random sampling from finished lots, keep us alert to minor fluctuations before they turn into problems. The batch traceability we enforce gives our buyers reassurance—if any anomaly arises, we track its source backwards within hours, not days. This level of discipline ensures that industry clients, from pharma to advanced materials developers, can trust our product in their most sensitive applications.

    We also respond to more specific customer needs, such as requests for documentation supporting compliance with restricted substance lists or detailed lab reports for patent filings. We keep ready records on solvent use, batch dates, and measured impurity levels, tailoring delivery of that information according to the unique requirements of each buyer. Our in-house regulatory experts track and interpret new rules in North America, Europe, and Asia, coordinating with production to adapt ahead of time and minimize disruptions.

    Sustainability: Our Reality and Long-Term Perspective

    There’s ongoing discussion these days about green chemistry and its role in specialty chemicals. We take the practical route—minimizing hazardous reagents, recycling where practical, and engaging third-party auditors for periodic environmental checks. Our process generates lower-organic solvent waste than most conventional routes, and our wastewater streams are treated and neutralized onsite before disposal. Occasionally, this means a slightly higher raw material cost or longer synthesis route, but industry clients who have faced permits and audits understand the peace of mind such investments bring.

    Efforts to cut our energy use have included engineering upgrades to reduce heating and cooling cycles in product purification. We’ve swapped out aging filtering equipment in favor of faster, more energy-efficient designs; choices like these make a difference when you look at total energy use across batches year after year. We discuss our sustainability practices with buyers who now include environmental metrics in their own supply chain reviews. In the spirit of honest manufacturing, we share shortcomings as well as successes. For example, we still wrestle with minimizing certain waste streams, but steady improvements in reactor yield, coupled with careful process optimization, reduce those challenges over time.

    Supply Chain and Delivery: What Direct Manufacturing Brings

    Buyers ask about our supply position all the time, especially in uncertain times. We’re a direct manufacturer, so we control all the core links in the value chain—from sourcing key aromatic feedstocks, right through synthesis and purification to final packing. This translates into real benefits for buyers facing unpredictable shipping lanes, tariff shifts, or last-minute project demands. Thanks to our vertical integration, we offer more accurate lead times, shorter production windows, and the flexibility to tackle custom purity or alternate pack sizes without third-party delays. We keep a buffer stock at our site for urgent orders and offer staggered shipments where long-term contracts require it.

    Many of our long-term users point out that our factory-direct model saves them procurement headaches: no unknown intermediaries, no third-party relabeling, direct traceability from our reactor to their warehouse loading dock. If a client calls with a specification shift, we can rapidly adjust at the source, not via a patchwork of subcontractors. This level of flexibility has smoothed over supply interruptions that would otherwise trigger costly production stops for end-users.

    Looking Ahead: Trends in Specialty Chemical Demands

    We keep close tabs on research trends and commercial shifts. The demand for precision building blocks like 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile only intensifies as custom synthesis work gets more exacting, whether for pharmaceuticals, challenging materials projects, or flavor and fragrance applications. Gradually, we’ve expanded our analytical toolkit to meet new requirements—chiral purity checks, detailed mass spec reports, and certificate formats tailored for regulatory filings. Increasingly, customers look for more than just purity: trace metals, residual solvents, and specific isomer ratios often make or break a project timeline. We’ve updated and upgraded our in-house labs accordingly, always seeking feedback from leading industry users on emerging standards and gaps they’ve encountered with other sources.

    A glance across the market landscape suggests a continuing shift toward stricter transparency and tighter quality demands. We see procurement teams increasingly requesting supply chain audits, renewable sourcing information, and deep-dive traceability. These demands fit our company culture well. By sticking to strict internal controls and documenting every step, we anticipate these shifts, rather than being forced to play catch-up.

    Closing Reflections: Experience as the Ultimate Proof

    Years in the industry have taught us that in chemical manufacturing, there’s no substitute for accumulated know-how. The small details—batch records, analytical documentation, regular calibration of every scale, careful planning of every order—deliver real-world value for customers. Feedback from practical users keeps us honest and drives continuing improvement, not wishful marketing claims. Our approach with 4-Hydroxy-3,5-Dimethyl-Benzenecarbonitrile reflects these lessons. Every batch represents our commitment to reliable production, mindful handling, and direct manufacturing expertise that helps research and production teams reach their goals, project after project.

    As chemistry continues to evolve and industries press for ever-closer control over their building blocks, we stand ready to help solve new problems and meet higher standards. The trust built over years comes not from advertising, but from delivering on promises, listening to those who work with our product every day, and staying open about both challenges and progress. For us, that’s the only way to build a truly enduring relationship—with every buyer, every batch, and every order we ship.