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2-(2-Chlorophenyl)-4,5-Diphenylimidazole

    • Product Name 2-(2-Chlorophenyl)-4,5-Diphenylimidazole
    • Alias CDPI
    • Einecs 242-723-5
    • 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

    804704

    Iupac Name 2-(2-chlorophenyl)-4,5-diphenyl-1H-imidazole
    Molecular Formula C21H15ClN2
    Molecular Weight 330.81 g/mol
    Cas Number 37052-78-1
    Appearance White to off-white powder
    Melting Point 210-213°C
    Solubility Slightly soluble in organic solvents (e.g., DMSO, ethanol)
    Purity Typically ≥ 98%
    Storage Conditions Store at 2-8°C, keep container tightly closed
    Synonyms 2-(2-Chlorophenyl)-4,5-diphenylimidazole
    Smiles c1ccc(cc1)c2c(nc(n2)c3ccccc3)c4ccccc4Cl
    Inchi InChI=1S/C21H15ClN2/c22-19-14-10-8-9-13-19-21-20(16-11-4-1-5-12-16)23-18(24-21)15-6-2-3-7-17(15)21

    As an accredited 2-(2-Chlorophenyl)-4,5-Diphenylimidazole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100g quantity of 2-(2-Chlorophenyl)-4,5-Diphenylimidazole is securely packaged in a sealed, amber glass bottle with hazard labeling.
    Shipping 2-(2-Chlorophenyl)-4,5-Diphenylimidazole is shipped in tightly sealed containers, protected from light and moisture. The package should be clearly labeled, compatible with chemical safety regulations, and cushioned to prevent breakage. Ship via ground or air following all relevant hazardous material protocols, with documentation outlining chemical identity, hazards, and handling instructions.
    Storage Store 2-(2-Chlorophenyl)-4,5-Diphenylimidazole in a tightly sealed container, away from direct sunlight, heat, and moisture. Keep in a cool, dry, and well-ventilated area, segregated from incompatible substances such as strong oxidizers and acids. Clearly label the container and limit access to trained personnel. Observe all relevant chemical storage and safety protocols.
    Application of 2-(2-Chlorophenyl)-4,5-Diphenylimidazole

    Applications of 2-(2-Chlorophenyl)-4,5-Diphenylimidazole in Industrial Manufacturing

    2-(2-Chlorophenyl)-4,5-Diphenylimidazole serves as a critical intermediate in several key industrial chemical processes. As the manufacturer, we work closely with chemical processing leaders to deliver this material in accordance with international standards for electronic, pharmaceutical, specialty pigment, and analytical reagent production. Our technical focus assures reliable supply and consistent integration across these advanced manufacturing scenarios.

    1. Electronic Light Emitting Materials for OLED Production

    This compound functions as a heterocyclic core for organic light-emitting diode (OLED) emissive materials. Leading electronics companies incorporate it as a building block for blue and green emitting layers, contributing to stability and color purity in display fabrication. Material purity and functional group integrity directly impact device efficiency and yield during the vacuum thermal evaporation or solution processing stages.

    Industry compliance standards

    • RoHS 3 Directive 2015/863/EU compliance
    • IEC 62471 for photobiological safety of lamps
    • ISO 9001:2015 quality management systems
    • REACH Regulation (EC) No. 1907/2006 registration

    Typical usage ratio

    • 2% to 8% by mass in host-dopant OLED formulations; actual proportion varies by targeted emission wavelength and device architecture

    Downstream process integration

    • Integrated during vacuum deposition or ink formulation for emissive layer fabrication; purification steps prior to blending ensure electronic grade purity

    Final product types

    • OLED display panels
    • Flexible mobile device screens
    • Solid-state lighting modules
    • Wearable display substrates

    2. Pharmaceutical API Intermediate for Antifungal Synthesis

    Pharmaceutical manufacturers utilize 2-(2-Chlorophenyl)-4,5-Diphenylimidazole as a core precursor in the synthesis of certain azole-based antifungal active pharmaceutical ingredients (APIs). The aromatic chlorinated structure is specifically favored for constructing imidazole-linked antifungal scaffolds. Precise batch-to-batch consistency in purity and particle size directly affects reaction yields and downstream API isolation efficiency within GMP production lines.

    Industry compliance standards

    • ICH Q7: Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP 23/EP 8 monograph references for key intermediates
    • EMA Guideline on the Specification Limits for Residues of Metal Catalysts
    • 21 CFR Part 211 Current Good Manufacturing Practice for Finished Pharmaceuticals

    Typical usage ratio

    • 0.9 to 1.2 molar equivalents relative to the imidazole ring construction step; adjusted per process scale and targeted API quantity

    Downstream process integration

    • Charged in the initial heterocyclization step within controlled reactor vessels; subsequent purification and derivatization lead to completed API synthesis

    Final product types

    • Generic and branded azole antifungal drugs
    • Pharmaceutical grade intermediates for local and global distribution

    3. Specialty Pigment Manufacturing for High-Performance Coatings

    Coatings and pigment producers select this imidazole derivative as a specialty chromophore precursor for producing organic pigments with high chemical resistance and UV stability. The aromatic chlorine substitution enhances solvent-fastness in advanced architectural, automotive, and industrial applications. Quality control during crystallization is critical to minimize impurities that may impact pigment tint or durability.

    Industry compliance standards

    • EN 71-3:2019 for toy safety (colorants)
    • ISO 787-24 for pigment chemical resistance testing
    • ASTM D4302 Standard Practice for Evaluation of Lightfastness of Pigments
    • REACH compliance for pigments used in consumer products

    Typical usage ratio

    • 5% to 15% as a key co-monomer or pigment intermediate in batch pigment synthesis lines, dependent on target shade and end-use requirements

    Downstream process integration

    • Introduced during the diazotization or condensation stage of pigment synthesis, followed by milling and granulation for pigment paste production

    Final product types

    • UV-resistant architectural coatings
    • Automotive OEM colorants
    • Printing inks for industrial substrates
    • High-durability plastic color masterbatches

    4. Analytical Chemistry Reagent Formulation

    Producers of analytical test kits and research reagents employ 2-(2-Chlorophenyl)-4,5-Diphenylimidazole as a core ligand or probe in sensitive chemical detection systems and spectrophotometric analysis. Material traceability, contaminant control, and spectral purity documentation remain essential for quality assurance laboratories and certified reference material producers.

    Industry compliance standards

    • ISO/IEC 17025:2017 for testing laboratory accreditation
    • ISO Guide 34:2009 for reference material producers
    • GLP (Good Laboratory Practice) guidelines
    • AOAC Official Methods for analytical reagents

    Typical usage ratio

    • 0.01% to 1% by weight in chromogenic reagent blends; exact amounts depend on detection limits and assay specificity

    Downstream process integration

    • Blended with other chromogens or stabilizers during reagent kit assembly; filtration and microdispensing processes ensure homogeneity and batch uniformity

    Final product types

    • Analytical test kits for environmental labs
    • Certified reference standards for academic research
    • Clinical diagnostic reagents for specialized assays
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    Certification & Compliance
    More Introduction

    2-(2-Chlorophenyl)-4,5-Diphenylimidazole: Quality from the Source

    Precision Begins at the Reactor

    Every batch of 2-(2-Chlorophenyl)-4,5-diphenylimidazole reflects a long-standing commitment to chemical synthesis carried out in our own facilities. We have refined our synthetic process to achieve a consistent crystallinity, clean batches, and minimized impurity profiles. Instead of relying on external suppliers or untraceable materials, we keep strict oversight on every step, from selection of base phenyl sources to the chlorination control points. Our chemists watch for more than purity; they verify the right melting point, batch color, and particle consistency as they monitor the critical steps. Production happens in glass-lined vessels under inert atmosphere, using stepwise additions and properly staged temperatures. These decisions come from decades of scaling up organic heterocycles for advanced uses.

    Product Model and Expected Physical Characteristics

    Each quantity leaving our plant follows the model labeling system built for traceability. Whether supplying kilogram lots to research institutes or multi-ton batches to pharmaceutical companies, the quality control lot numbers tie directly to our process data. Physically, this compound usually appears as a fine, pale-yellow crystalline solid. We focus on providing specifications that matter in practice: melting point, water content, total ash, identifiable impurity thresholds, and density. For our core 2-(2-Chlorophenyl)-4,5-diphenylimidazole, melting points run in a very narrow range, typically below 250°C, and the product remains stable under dry storage. These features come not from adherence to generic regulatory norms, but from many years correcting processes to deliver feedback-informed improvements to the physical form our users depend on.

    Understanding Its Usage

    Users in pharmaceutical research, dye intermediates development, and advanced material synthesis select this molecule because it behaves predictably under a range of transformations. Chemists interested in structure-activity relationships see value in the rigid imidazole core supporting two phenyl rings and a 2-chlorophenyl substituent. This configuration opens up possibility for both small-molecule drug development and ligand research, owing to both the electron-rich nature of the core and the subtle effects imparted by the chlorine atom. In our own collaborations with academic groups, we have seen it incorporated into synthetic routes aimed at antihistaminic research and novel material scaffolds. Our customers have also used it in optical brightener R&D, especially for high-stability environments.

    Handling experience over many production blocks shows that the compound tolerates most routine storage without significant degradation. It withstands air exposure during handling. Still, dry inert packaging shields against long-term moisture pickup or trace hydrolysis. Good solid handling practices prevent cross-contamination—a lesson we learned early, prompting us to overhaul our transfer hoods and retrain staff around single-compound lines for compounds in this complexity class.

    Comparison with Related Imidazoles and Alternatives

    Choosing 2-(2-Chlorophenyl)-4,5-diphenylimidazole over other diphenyl- or chlorophenyl-imidazoles requires an eye for subtle but impactful differences. Experience has shown that imidazoles with a para-chlorophenyl group react differently under substitution or metallation conditions compared to compounds bearing an ortho-chlorine, as found here. Subtle steric hindrance at the ortho position creates a noticeable effect in subsequent coupling reactions, which can either help direct regioselectivity or block unwanted pathways. We have seen this play out in both small-scale library synthesis and larger campaigns, where predictable behavior at each reactive site helps limit chromatographic steps. Imidazoles lacking the ortho-chlorine sometimes lead to side reactions that increase downstream purification burdens, a headache for any process chemist.

    Compared with imidazoles where the aromatic rings are substituted at positions 2, 4, and 5 by only hydrogen atoms or alkyl groups, the three-ring system in this molecule delivers tangible differences in stacking, solubility, and intermediate stability. Our formulation team noticed early on that this compound can offer enhanced compatibility in polar organic solvents, and reactivity patterns suit certain condensation reactions much better than simpler analogs. When comparing with broader heterocycles lacking the imidazole core, such as benzimidazoles or oxazoles, the electron-rich arrangement in 2-(2-Chlorophenyl)-4,5-diphenylimidazole has enabled more efficient downstream derivatization and functionalization in a variety of medicinal chemistry settings.

    From the synthesis perspective, this compound’s manufacturing process demands more precise control over halogen handling and by-product suppression than structurally similar molecules. In fact, we refined our reactor conditions and purification protocols specifically because early runs highlighted challenges with removing halogenated side-products. Not all suppliers have the capability to address these at scale. Being an actual manufacturer, we take pride in product built from the floor up, not just relabeled at another site.

    Why In-House Production Matters

    Many market offerings originate from trading chains, with actual origin obscured. Over our years producing 2-(2-Chlorophenyl)-4,5-diphenylimidazole ourselves, we found direct synthesis and immediate quality testing brought clear benefits. Trace impurities get flagged and corrected, reproducibility supports critical downstream research for our customers, and waste management meets our own internal sustainability goals. That hands-on attention paid to every batch avoids the complications that come from questionable intermediates crossing borders, or incomplete paperwork often seen in warehoused chemicals. Only repeated hands-on process refinement delivers this kind of reliability.

    Process safety sits at the core of what we do. Systematic screening of each raw material prevents contamination with extraneous halides or polychlorinated byproducts. Operators make routine checks on not just the finished product, but intermediates within the reaction step. The feedback loop between our synthesis, purification, and analytical teams closes gaps and creates a manufacturing environment focused on reproducible results, not just volume.

    Supporting R&D and Feedback-Based Improvement

    Many research groups depend on accurate structure and purity, so they can explore functionalization or stepwise reactions with confidence. Direct feedback matters in this process. Over the years, several research teams sent us specific analytical reports or even molecular modeling requests. Translating this feedback, we have adjusted synthesis pathways, recrystallization methods, and drying stages. One team discovered a minor UV-active impurity that prompted us to re-engineer our post-reaction filtration, tightening the impurity threshold for all following output.

    We rely on a dedicated in-house analytical suite: NMR, HPLC, and LC-MS for high-purity requirements and trace contamination checks. Consistent spectra, peak purity, and batch-to-batch documentation allow us to follow up with users quickly. Such capability is often missing in broker-supplied batches, where analytical data may be generic or “representative” rather than directly tied to the lot actually delivered. This kind of closed-loop quality support becomes all the more vital for users seeking regulatory filings or supply for scale-up chemistry.

    Engagement doesn’t stop with compliance or routine customer checks. A handful of our end users work with next-generation applications in polymer science and energetic studies, and their results prompt ongoing process optimization on our side. We find that taking part in early-stage studies, rather than just waiting for complaints or market signals, yields steady improvements in what we can offer. Such practice builds trust on both sides.

    Handling and Sustainability in Practice

    Safe chemical handling depends not on paperwork, but training at every step. Early in our history with 2-(2-Chlorophenyl)-4,5-diphenylimidazole, we invested in operator education on personal handling, transfer safety, and spill management. Packaging leaves our gates in sealed, airtight containers under as inert an atmosphere as possible. Returnable packaging options have proven effective in keeping down both exposure risk and site-generated waste. Desiccation and UV protection preserve product integrity for longer shelf lives—not just for us, but for customers who may store batches across seasons.

    Sourcing, storage, and shipping each follow a traceable log that includes batch temperature records, all visible to end users who require documentation not just at the point of receipt but through the storage lifecycle. Managing transportation involves partnerships with carriers familiar with specialty fine chemicals, reducing risk of cross-contamination and ensuring that all product transitions are as clean as possible.

    In recent years, we have responded to growing demand for environmentally responsible production. We audit each stage for solvent recovery efficiency, waste stream segregation, and energy use. Our teams substituted several organic solvents with greener alternatives, and we implemented distillation-based solvent recovery for the most heavily used materials. These steps not only reduce regulatory risk but also represent a real contribution to reducing our facility footprint.

    Continuous Upgrade, Not One-Time Achievement

    Making a specialty compound like 2-(2-Chlorophenyl)-4,5-diphenylimidazole involves much more than setting up a single robust process. Every commercial run highlights some small inefficiency, analytical anomaly, or packaging variant that can be further improved. Practical upgrades come from consistent operator feedback, close relationships with laboratory staff, and tracking of customer outcomes.

    Improved synthetic routes allowed us to raise yield over legacy methods, cut down on high-boiling waste, and deliver cleaner product that performs more predictably in downstream transformations. For many years, the core synthetic scaffold was slow and sometimes unreliable; now, chemistry teams see batch turnaround times improve, thanks to modern automation and process control. These advances do not simply serve cost goals—they deliver concrete benefits to researchers and formulators counting on tight project timelines.

    Whether a customer runs high-throughput screens in drug discovery, works up new light-stable dyes, or investigates novel catalysts, they find utility in a product whose manufacturing origins are documented, consistent, and responsive. Engineers and researchers need to spend time on their core innovations, not solving mysteries introduced by variable chemical quality.

    Looking Toward the Future

    Compound specialization accelerates as new applications demand more precise building blocks. Recently, we have initiated new research into functionalized variants and salt forms of 2-(2-Chlorophenyl)-4,5-diphenylimidazole, working in dialogue with synthetic chemists engaged on the frontiers of their fields. Our experience so far suggests that structurally similar compounds, when made by manufacturers invested in process transparency and documentation, support higher research throughput and richer discovery than any generic version sold through poorly documented supply chains.

    Growth in new pharmaceutical and materials applications frequently depends on modifications to existing cores, and our in-house synthetic team actively works up routes to acylated, aminated, and cross-coupled derivatives. Pre-planning for selective halogen exchange, protection-deprotection cycles, and scale-up feasibility speeds up user-driven innovation. Unlike distributors passing along standardized specifications, we receive direct process feasibility feedback on feasibility and technical sticking points. This cycle leads to more robust, trusted chemical intermediates for our clients.

    From the laboratory bench to the plant floor, we have seen that thorough documentation, supply transparency, and well-adapted handling procedures make the difference in both day-to-day operations and major project milestones. Each kilogram and each specification tells a story of continuous refinement—one that would be difficult to match with intermediaries lacking chemical manufacturing expertise and hands-on stake in the final result.

    Commitment to Evidence, Not Hype

    We take clarity seriously. Our technical and analytical practices remain open to regular audits by partners and collaborators. Analytical data never stands in isolation: each lot comes with attached records, physical samples archived for retesting, and open-door access to our analytical staff. Users needing expanded data (from trace residuals to comparative degradation studies) benefit from a real person able to answer technical questions with direct access to plant and analytics. Where challenging questions arise, we believe in data and process transparency replacing market guesswork.

    Ongoing cooperation with academic and industry partners means new use-cases and updated performance targets are promptly reflected in production changes. For each shift in market or research expectation, we keep communication lines open, enabling faster adaptation than larger, less nimble operators. Results prove this approach: improved yields, cleaner analytical traces, and fewer inconsistent supply interruptions, even across volatile periods globally.

    2-(2-Chlorophenyl)-4,5-diphenylimidazole may look like just another catalog listing elsewhere. Experience from our plant floor tells a different story—one of hands-on process control, fast feedback, and incremental advantages that compound with every batch produced. Those ready to push new boundaries in research, manufacturing, or formulation need more than a generic supply; they benefit from chemicals made by those who care about process and progress, from foundation to finished product.