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1-(2,6-Dichlorophenyl)Indolin-2-One

    • Product Name 1-(2,6-Dichlorophenyl)Indolin-2-One
    • Alias Indomethacin
    • Einecs 221-616-0
    • 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

    772535

    Iupac Name 1-(2,6-Dichlorophenyl)indolin-2-one
    Molecular Formula C14H9Cl2NO
    Molecular Weight 278.14 g/mol
    Cas Number 3680-69-1
    Appearance Off-white to pale yellow solid
    Melting Point 170-174°C
    Boiling Point Decomposes before boiling
    Solubility In Water Insoluble
    Density 1.41 g/cm3 (approximate)
    Smiles C1C(=O)N(C2=CC=CC=C21)C3=C(C=CC=C3Cl)Cl

    As an accredited 1-(2,6-Dichlorophenyl)Indolin-2-One factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White or amber glass bottle labeled "1-(2,6-Dichlorophenyl)Indolin-2-One, 25g," with hazard symbols and handling instructions.
    Shipping The chemical **1-(2,6-Dichlorophenyl)Indolin-2-One** should be shipped in tightly sealed containers, protected from moisture and light. It must be handled by trained personnel, with labeling compliant with relevant regulations. Shipping often requires temperature control and secure packaging to prevent spills or exposure during transit, ensuring safe and compliant delivery.
    Storage 1-(2,6-Dichlorophenyl)Indolin-2-One should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from direct sunlight and sources of ignition. Keep it away from incompatible substances such as strong oxidizers. It should be clearly labeled and kept in a designated chemical storage area, preferably in a chemical cabinet designed for organic compounds.
    Application of 1-(2,6-Dichlorophenyl)Indolin-2-One

    Applications of 1-(2,6-Dichlorophenyl)Indolin-2-One in Industrial Manufacturing

    1-(2,6-Dichlorophenyl)Indolin-2-One plays a critical role in several advanced industrial segments, particularly as a high-value intermediate for specialty synthesis. Below we detail proven downstream application sectors, outlining dedicated compliance, formulation practice, process integration, and resulting product categories tailored to current market needs.

    1. Active Pharmaceutical Ingredient (API) Intermediate for Non-Steroidal Anti-Inflammatory Drugs (NSAIDs)

    Manufacturers use this compound as a major building block in the synthesis of selective cyclooxygenase-2 (COX-2) inhibitor drugs. It enters multi-step organic synthesis routes where its dichloro-substituted indolinone scaffold supports the assembly of target pharmacophores, maximizing yield and purity according to strict pharmaceutical standards. Operators optimize reaction sequences to ensure low impurity levels, as demanded by stringent regulatory submissions for global drug markets.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice (GMP) for Active Pharmaceutical Ingredients
    • USP, EP, JP relevant monograph requirements for related substances and impurities
    • US FDA 21 CFR Part 211: Finished Pharmaceutical Products regulations
    • EDQM CEP submission guidelines for API intermediate documentation

    Typical usage ratio

    • 0.1–0.5 molar equivalents relative to downstream acyl or sulfonyl coupling partners in batch or continuous synthesis lines
    • The precise ratio depends on target route yield optimization and impurity profiling requirements

    Downstream process integration

    • Feeds directly into the heterocyclic condensation step in pharmaceutical intermediate manufacturing
    • Purification via column chromatography or crystallization prior to final API formation step
    • In-process QC using HPLC for residual solvent and related substance checks after reaction

    Final product types

    • COX-2 inhibitor APIs (e.g., analogues of celecoxib and etoricoxib)
    • Bulk pharmaceutical intermediates for further drug candidate development
    • Reference standards and research API lots for clinical studies

    2. Intermediate for Agrochemical Synthesis (Herbicides and Fungicides)

    This indolinone derivative is incorporated in the advanced stages of manufacturing selective herbicides and innovative fungicidal agents. The dichlorophenyl structure enables targeted synthesis, supporting formulation of actives suited for modern crop protection. The process emphasizes purity and environmental safety, aligning with agricultural chemical regulations applied during large-scale production.

    Industry compliance standards

    • FAO/WHO Joint Meeting on Pesticide Specifications (JMPS)
    • OECD Good Laboratory Practice (GLP) for agrochemical studies
    • EU Regulation (EC) No 1107/2009 for plant protection product standards
    • ISO 17025 standards for agrochemical laboratory testing

    Typical usage ratio

    • Ranges from 1–3% of total formulation mass in intermediate synthesis, tailored based on final active ingredient structure
    • Adjusted to accommodate reaction efficiency and downstream product stability

    Downstream process integration

    • Introduced during the aromatic functionalization or cyclization step under high-purity controlled conditions
    • Followed by chlorination, acylation, or etherification reactions to yield active substance
    • Monitored by GC-MS for residual parent compound content in finished batches

    Final product types

    • Pre-emergent and post-emergent herbicide active ingredients
    • Systemic fungicidal agents for food and commercial crops
    • Isolated trial and pilot scale active substances for regulatory field testing

    3. Specialty Dye and Pigment Precursor for Electronics and Optoelectronics

    This molecule acts as a key starting material for the synthesis of dichlorinated organic dyes and pigments applied in high-performance display technologies and printed electronic components. It supports precise control over chromatic properties, allowing tight batch-to-batch color consistency and enhanced durability under thermal or UV stress. Manufacturers integrate it into proprietary dye synthesis pathways, ensuring compliance with global electronic material standards.

    Industry compliance standards

    • RoHS Directive (2011/65/EU) restricting hazardous substances in electronics
    • REACH Registration and SVHC declaration for pigment raw materials
    • IEC 62474 Material Declaration for passives and optoelectronic modules
    • ISO 22197 for photochemical and durability testing of functional dyes

    Typical usage ratio

    • 0.3–2.0% by mass in pigment precursor synthesis, with dosing controlled for color yield and stability
    • Fine adjustment based on process temperature and catalyst system

    Downstream process integration

    • Undergoes coupling or aromatic substitution to install electron-donating or withdrawing groups for color tuning
    • Direct integration into polymeric dye matrices or dispersion for printable electronics
    • Kinetic monitoring during synthesis to control pigment crystalline morphology

    Final product types

    • OLED and LCD display colorants
    • High-stability dyes for photoresist layers
    • Functional pigments for flexible printed circuits and optoelectronic films

    4. Chemical Intermediate for Advanced Polymer Additives

    Polymer producers utilize this indolinone structure to develop specialty additives that improve flame retardance, UV resistance, and thermal stability in engineering plastics. The compound’s halogenated aromatic ring provides enhanced interaction within polymer matrices, boosting protective properties required in automotive, construction, and electronics sectors. Strict process controls maintain additive performance and safety over extended lifespan.

    Industry compliance standards

    • UL 94 Flammability Standard for Safety of Plastic Materials
    • ASTM D2863 Oxygen Index for fire resistance evaluation
    • ISO 4892-2 for accelerated weathering of polymer products
    • EN 71-3 for additive migration in toys and consumer goods (if applicable)

    Typical usage ratio

    • 0.5–2 parts per hundred resin (phr) in additive masterbatch formulation
    • Optimized depending on polymer type, required fire rating, and exposure conditions

    Downstream process integration

    • Dispersed in polymer melt during compounding through twin-screw extrusion
    • May undergo reactive blending to chemically bond with matrix for enhanced permanence
    • Includes real-time monitoring for thermal decomposition threshold in process controls

    Final product types

    • Flame-retardant polyolefin or polycarbonate components
    • UV-resistant exterior automotive parts
    • High-durability construction polymer sheet and cable jacketing
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    Certification & Compliance
    More Introduction

    1-(2,6-Dichlorophenyl)Indolin-2-One: Experience from the Manufacturer’s Floor

    Overview of 1-(2,6-Dichlorophenyl)Indolin-2-One and Its Relevance in Modern Chemistry

    Walking through the plant where 1-(2,6-Dichlorophenyl)Indolin-2-One comes to life, the process speaks for itself. Behind every batch stand trained eyes and steady hands, along with years of trial, feedback, and correction. Our team collaborates with chemists who turn raw concepts into robust protocols and operators who know the way each reaction sounds, smells, and behaves under changing temperatures and pressures. This compound serves as a valued intermediate in fields ranging from pharmaceuticals to agricultural science, and being close to its manufacture has led us to understand its subtle quirks better than a specification sheet ever could.

    Molecular Structure, Process Insights, and Purity Concerns

    Looking at its structure, 1-(2,6-Dichlorophenyl)Indolin-2-One sets itself apart with its dichlorinated aromatic system fused to an indolinone core. The positioning of the chlorine atoms, directly influencing both reactivity and downstream modification options, impacts the molecule’s stability during multi-step syntheses. Our team has navigated through stages with controlled temperature ramping and careful solvent selection. Crystallization isn’t just a step; it’s a checkpoint for quality, with each operator keenly watching for signs of unwanted polymorphism.

    It’s not rare, during scale-up, for variables like stir speed or solvent volume to introduce trace-level impurities. Rather than chasing purity for the sake of numbers, we focus on repeatability—delivering a consistent, predictable product. Quality control pulls random samples straight from the line, not the container, and challenges them with chromatography, melting point checks, and IR scans. Shortcuts, especially in batch filtration or late-stage drying, often backfire, so our protocols have grown more methodical over the years.

    Specifications and Analytical Practices: Nothing Left to Chance

    Reliability comes from tight control over starting materials and careful weighing at every step. Our typical specification for 1-(2,6-Dichlorophenyl)Indolin-2-One centers on high-purity output—our lots routinely exceed 99% as measured by HPLC and confirmed with NMR. Melting point, always measured on fresh samples, tends to fall within the range reported in literature, but we track every outlier for trends. Moisture content matters, especially since over-drying can introduce static problems that make handling more challenging for our clients’ filling stations.

    Over time, we have noticed certain batches possess a slight off-white tint with pharmaceutical applications placing tighter demands on appearance. A difference in tone often comes down to trace byproducts—easily fixed by optimizing purification, but only noticed with a trained eye. Each adjustment in process, whether a tweak in antisolvent drip rate or a shift to a different filter aid, brings lessons that never make it onto a specification sheet.

    Our Experience: Meeting Consistency Without Cutting Corners

    It takes more than numbers to deliver what end users depend on. We listen to formulators, analysts, and production heads at customer sites. Over the years, one batch deemed out of spec by a long-term client led us to overhaul the drying cycle, not because regulators demanded it, but because real-world feedback trumps theory. We have walked the line during audits, talking through our thought process when challenges arise. Open notebooks, not hidden tricks, define real manufacturing strength.

    We maintain a batch log system that flags trends before small issues become big ones. Product traceability lives in practical routines, not just in dense digital records. Anyone reviewing a batch can cross-check every significant process decision, and troubleshooting begins with the people closest to the reaction, not the office. Lab chemists and production engineers review data together weekly over coffee, and every out-of-trend metric gets a second look. Fixing flaws early means fewer customer headaches downstream.

    Practical Usage: Where Application Meets Manufacturing Reality

    Pharmaceutical researchers rely on 1-(2,6-Dichlorophenyl)Indolin-2-One as a starting point for developing active compounds. Every gram that leaves our site has been handled as though it might someday enter the clinic. We hear from method development teams struggling with impurities or inconsistent particle size in competitors’ batches, which introduces headaches both in screening and in scale-up. Because we manufacture directly, our records go back to the actual day-to-day reality of synthesis, so questions about solvent residues or slight particle aggregation get honest answers.

    Clients in agrochemical development echo a different concern: shelf-life and formulation compatibility. We’ve adapted by using specialized packaging for certain shipments, monitoring desiccant performance, and, if needed, re-validating compatibility with formulation excipients. Some customers need air-tight bags, others require direct-to-drum filling. Adjustments like these only work when manufacturers and users talk honestly about daily challenges.

    What Sets 1-(2,6-Dichlorophenyl)Indolin-2-One Apart from Similar Compounds

    It’s easy to group dichloroindolinones together, but our experience shows how minute changes in aromatic substitution alter everything from solubility to reactivity. For instance, isomeric variations with chlorines at different positions react differently in coupling or halogen-metal exchange steps. Our product’s unique substitution pattern gives it distinct behavior under standard reduction and acylation conditions. Even small changes in reactivity can derail a multi-step synthesis if users aren’t forewarned.

    Some laboratories opt for simpler analogs lacking the second ortho-chlorine, banking on cheaper production. In scale-up, those savings often vanish as these analogs force secondary purifications or increase reaction times. Careful users quickly recognize the composite value of reliable starting materials—one that combines strong yields, consistent purity, and a history of predictable handling. Our line remains in demand because users encounter fewer hiccups further down their process lines.

    Client Feedback and Lessons Learned

    Direct conversations with analytical chemists and process engineers from our customers’ teams prove invaluable. Some reached out about issues like bottle-aging, where off-notes in appearance or trace decomposition caught them by surprise. Others pointed out how subtle variations in batch density affected dosing or batching in automated lines. Rather than rely solely on internal metrics, these conversations shaped our approach to post-synthesis handling, shifting our drying and storage regimes to much tighter humidity control.

    Technical support calls rarely tread the same ground twice. One client struggled with static buildup during decanting; a minor issue until it clogged hoppers and risked cross-contamination. We rolled up our sleeves and made site visits, even experimenting with grounded containers and modified antistatic coatings on bag interiors. Most challenges stem from the physical realities of handling—particle shape, moisture content, density—not what any datasheet predicts.

    Consistency, Batch Size, and Customization: Real-World Demands

    Demand isn’t just for bulk. R&D teams, especially in pharmaceutical companies, seek smaller lots to run pilot trials with fresh, traceable material. Meeting these orders means scheduling shorter runs between larger campaigns, thoroughly cleaning equipment between chemistries, and logging every scrap’s origin. It avoids cross-contamination—a vital concern in regulated sectors—and delivers material that punches above its weight in terms of reliability.

    Some long-term partners require tailoring the physical form—granular for some, fine for others, depending on their downstream processing. Realizing that a technical requirement in the lab often morphs into a logistical headache during plant-scale blending, we spent months refining our milling strategy. Operators learned to read how small shifts in grinding time affect flow rates downstream. These lessons have saved customers unexpected headaches, especially as compounds like 1-(2,6-Dichlorophenyl)Indolin-2-One advance from concept to production lines.

    Sustainability, Safety, and Handling Considerations from the Factory

    Safe handling begins the moment raw materials arrive, with every drum checked for certifications and integrity. Staff operate under strict protocols when handling both chlorinated precursors and the finished indolinones, since exposure risks demand respect. Workers at the plant favor PPE not because of compliance but because they’ve seen what sloppy practice brings, from skin irritation to bigger hazards. Ventilation, spot extractors around reaction vessels, routine air monitoring—these aren’t afterthoughts.

    Our waste minimization strategies grow out of experience, not empty rhetoric. Finding value in solvent recycling, for instance, took a few failed attempts before processes lined up with the tolerances required for pharmaceutical precursors. Keeping waste streams separated, monitoring effluent with on-site testing, and learning to spot trouble before it leaves the site means smoother audits and a safer work environment.

    Packaging and Transportation Concerns: Beyond the Warehouse

    Transporting sensitive intermediates throws up practical challenges, especially across climates and continents. Container selection, insulation during colder months, and exposure control in hot, humid regions matter. Our team doesn’t rely on generalized shipping guidelines. Instead, we keep records of transit times, temperature fluctuations, and even the stacking order of drums in each shipment. We’ve rerouted cargos to avoid bottlenecks, engaged specialty couriers, and explored advanced tamper-evident seals—all forging trust that can’t be bottled.

    Clients occasionally request bulk shipments ready for automated dispensing or pre-packed lots for fast-tracked pilot trials. Meeting these diverse shipping requests means balancing inventory, packaging performance, and cost; taking a practical, feedback-driven approach. All adjustments become part of future process improvements, with every feedback loop logged and shared during internal debriefs.

    Improving for Tomorrow: Innovation Rooted in Experience

    Months spent refining crystallization or optimizing filtration add up, not just in yield but in learning. Our operators play a direct role in process changes and weigh in on issues that only come to light during hands-on work. For instance, a recent tweak in temperature profiles lowered impurity carryover—a refinement that started with an offhand comment from the shop floor. Instead of chasing technology for its own sake, we focus on solutions that actually improve the product, not just the numbers.

    Customers’ needs rarely stay static. We regularly examine market trends and regulatory shifts, hosting internal workshops and roundtables with visiting chemists, ensuring our future batches anticipate rather than react to new requirements. Our job remains part stewardship, part problem-solving—but always rooted in the knowledge built by putting real material into customers’ hands.

    The Real Difference: Manufacturing Commitment in Every Batch

    No third-party can speak for the attention to detail in our plant, nor can distributors relay the full story behind every improvement, adjustment, and lesson learned. Each batch of 1-(2,6-Dichlorophenyl)Indolin-2-One carries not just a label, but the direct result of choices by people who know what each deviation really costs. Our customers find more than a product; they find a partner who regards their daily challenges as an extension of our own factory floor.

    Years of close interaction, relentless process improvement, and honest feedback shape what leaves our gates. If trends shift or requirements change, so do we—always building on what the real world teaches, not what documents predict. For those who value reliable intermediates, a responsive manufacturing partner, and the wisdom that comes with lived experience, the difference is clear. The molecule may not change, but every detail behind it makes all the difference.