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2-Bromofluorene

    • Product Name 2-Bromofluorene
    • Alias 9-Bromofluorene
    • Einecs 210-802-7
    • 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
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    Specifications

    HS Code

    458194

    Chemical Name 2-Bromofluorene
    Molecular Formula C13H9Br
    Molar Mass 245.12 g/mol
    Cas Number 573-17-1
    Appearance White to off-white solid
    Melting Point 110-114 °C
    Boiling Point 352 °C
    Density 1.52 g/cm³
    Solubility Insoluble in water
    Smiles Brc1ccc2c(c1)ccc3ccccc23
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry, well-ventilated place

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

    Packing & Storage
    Packing The packaging for 2-Bromofluorene, 25 grams, is a tightly sealed amber glass bottle with a hazard label and product details.
    Shipping 2-Bromofluorene is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. It is classified as a hazardous material and must be handled according to local, national, and international regulations. Ensure proper labeling, use secondary containment, and follow safety guidelines for transport to prevent leaks and exposure.
    Storage 2-Bromofluorene should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep it separate from incompatible substances such as strong oxidizing agents. Store at room temperature and protect from moisture. Use appropriate chemical-resistant shelving and ensure proper labeling according to chemical safety regulations.
    Application of 2-Bromofluorene

    Applications of 2-Bromofluorene in Industrial Manufacturing

    2-Bromofluorene serves as a critical intermediate in several advanced chemical manufacturing sectors. Our plant-synthesized material is produced under strict quality assurance to meet the distinct requirements of each downstream application. Below, we detail specific industrial use-cases, including compliance, recommended ratios, operational methods, and final products verified in real B2B supply chains.

    1. Organic Light-Emitting Diode (OLED) Material Synthesis

    Display manufacturers rely on 2-Bromofluorene for constructing fluorene-based OLED intermediates, due to its bromine functionalization, which facilitates key cross-coupling reactions. Customers employ it mainly in Suzuki or Stille coupling processes to build high-purity, large-volume organic emitters and hole-transport materials. Raw material lot qualification adheres to strict impurity control and trace metal analysis, as optical device efficacy depends on batch reproducibility and consistency.

    Industry compliance standards

    • IEC 62341: Organic light-emitting diode (OLED) panels for general lighting – performance standards
    • RoHS 2 (2011/65/EU): Restriction of hazardous substances in electronic equipment
    • REACH Registration (EC No. 1907/2006): Substance approval for use in electronic chemicals
    • ISO 9001:2015 Quality Management Systems

    Typical usage ratio

    • 5–15% by mole in coupling steps, adjusted per targeted emitter molecule’s structure requirements
    • Reactant excess of 1.05–1.2 equivalents in cross-coupling for higher conversion rates

    Downstream process integration

    • Charged to the coupling reactor during construction of symmetric and asymmetric fluorene scaffolds
    • Follow-up purification via column chromatography or recrystallization before electronic grade assessment
    • Direct transition into evaporation-grade emitter formulations for panel fabrication

    Final product types

    • Blue and green OLED emitters for television and smartphone displays
    • Hole-transport layers in high-brightness lighting panels
    • Matrix-type organic photodetectors
    • Active matrix display substrates

    2. Advanced Pharmaceutical Intermediate Manufacturing

    API producers utilize 2-Bromofluorene to introduce fluorene functionality in the synthesis of high-value pharmaceutical intermediates, including selective kinase inhibitors and CNS (central nervous system) drug candidates. Reaction schemes typically involve Suzuki coupling or Buchwald-Hartwig amination using the bromo group for aryl-aryl linkage. Material traceability, residual halide content, and compliance with GMP trace impurity thresholds are critical at each scale-up stage.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • 21 CFR Part 211: US FDA Current Good Manufacturing Practice
    • USP <232> and <233>: Elemental impurities in pharmaceuticals
    • EMA Guideline on Specification Limits for Residues of Metal Catalysts (EMA/CHMP/SWP/4446/2000)

    Typical usage ratio

    • 0.8–1.2 molar equivalents for arylation or alkylation reactions in API intermediate building
    • Adjusted based on targeted yield and regulatory impurity limits (e.g., <0.1% residuals)

    Downstream process integration

    • Fed directly into batch or flow reactors in the arylation or amination stage
    • In-process control for bromide purge and lot suitability by HPLC and GC-MS
    • Post-reaction purification according to GMP protocol prior to API finalization

    Final product types

    • Kinase inhibitor intermediates for oncology drugs
    • CNS active compound precursors
    • Advanced fluorene-derivative APIs (as per INN records)
    • Referential impurity standards for quality validation

    3. Polymeric Resin Additive for High-Performance Polymers

    Producers of specialty polymers incorporate our 2-Bromofluorene during the synthesis of thermally stable, rigid aromatic polyimides and polyesters. Its structure imparts rigidity, flame retardance, and optical clarity. Material is introduced as a chain-extender or comonomer under melt or solvent conditions, with close monitoring of molecular weight distribution and residual halogen content to comply with physical property targets set by automotive and aerospace manufacturers.

    Industry compliance standards

    • UL 94: Standard for Safety of Flammability of Plastic Materials
    • ISO 1043-1: Plastics — Symbols and abbreviated terms for polymer types
    • ASTM D3418: Differential Scanning Calorimetry for Thermal Analysis of Polymers
    • REACH SVHC List for monomer impurity control

    Typical usage ratio

    • 0.5–4 wt% as comonomer or chain modifier in advanced polymer backbones
    • Range adjusted per desired thermal and mechanical specifications or customer technical sheet

    Downstream process integration

    • Incorporated at monomer stage in melt polycondensation or solution polymerization reactors
    • Monitored for gel content and Flory-Huggins miscibility in process QC
    • Dispersion optimization for color, transparency, and mechanical uniformity in pellets or films

    Final product types

    • Laser optical plates for industrial scanners
    • Interlayer films in aerospace composite panels
    • High-transparency automotive exterior and interior parts
    • Flame-retardant insulator sheets

    4. Ligand Synthesis for Homogeneous Catalysis

    Catalyst manufacturers incorporate 2-Bromofluorene in the custom synthesis of bidentate and pincer ligands for homogeneous catalysis. The aryl-bromo moiety allows precise assembly of sterically controlled ligand backbones via Pd-, Ni-, or Cu-catalyzed functionalization, ensuring high-yield, single-batch reproducibility for scale-up. Material is handled under nitrogen blanket and subjected to rigorous trace metal and halide analysis for downstream catalyst performance validation.

    Industry compliance standards

    • ISO 17025:2017 Laboratory accreditation for analytical testing
    • REACH Annex XVII for industrial catalyst components
    • IChemE Good Laboratory Practice Guidelines
    • Supplier chemical registration with ECHA (as required for catalyst sector)

    Typical usage ratio

    • 1.0–1.5 equivalents relative to aryl halide partner in ligand-forming steps
    • Adjustments based on ligand design targets and catalyst turnover number requirements

    Downstream process integration

    • Charged in inert atmosphere reactors for Buchwald or Kumada coupling during ligand synthesis
    • QC screening by NMR and elemental analysis for ligand purity and function
    • Direct scaling into catalyst complex preparation after yield confirmation

    Final product types

    • Phosphine or diarylamine-based catalyst ligands
    • Pincer ligands for fine chemical hydrogenation
    • Metal-organic catalysts for pharmaceutical and olefin production
    • High-activity R&D catalyst libraries
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    Certification & Compliance
    More Introduction

    2-Bromofluorene: A Reliable Intermediate for Specialty Synthesis

    Understanding 2-Bromofluorene from a Manufacturer’s Perspective

    Here in the chemical manufacturing field, the attention often goes to headline grabs like materials for electronics or pharmaceuticals, but the unheralded intermediates keep most industries ticking. 2-Bromofluorene sits within that cadre of core building blocks, relied on by laboratories and industrial synthesis teams to bridge the gap between foundational organics and high-value specialty compounds.

    2-Bromofluorene is part of the fluorene family—aromatic compounds recognized for stability, reactivity under controlled conditions, and compatibility with a range of catalytic processes. In production, precision starts from the first feedstocks. Unwanted moisture, catalyst residue, or nonstandard particle sizes limit reactivity and introduce unpredictable impurities. Manufacturers maintain exacting control here, utilizing high-purity starting materials and stringent distillation or recrystallization protocols. Residual solvents or non-volatile fractions can undermine downstream reactions, so quality assurance takes center stage during each batch cycle.

    Key Specifications and Handling

    Our experience with 2-Bromofluorene tells us purity and consistent characteristics outweigh other selling points. Typical output comes as a white to off-white crystalline solid, but the absence of visible color isn’t a hallmark of real quality. Analytical standards—using HPLC, NMR, or GC—confirm the bromine is precisely situated at the 2-position of the fluorene nucleus. Manufacturers run frequent assays for total bromide content, as bromine migration or dimerization affects both reactivity and hazard profile.

    Managing crystalline morphology also makes a difference during handling and downstream processing. Finer crystals dissolve more evenly in organic solvents, but overly powdery samples can introduce static and dusting concerns. In our plant, we optimize recrystallization temperature and stirring speed to balance processability with ease of transport. The melting point range, typically falling around 105 to 108 degrees Celsius, provides a rapid fingerprint for batch consistency. Consistent melting readings make a tangible impact when timing temperature-sensitive Grignard, Suzuki, or Pd-catalyzed coupling reactions.

    How 2-Bromofluorene Fits In

    2-Bromofluorene serves as a go-to intermediate in the preparation of polyaromatics, advanced polymers, and fine chemical derivatives. The key difference from other halogenated fluorenes—such as 2-Chlorofluorene or 2-Iodofluorene—comes from both its chemical reactivity and economic accessibility. Bromine, positioned at the 2-substituted locus, grants a balance of reactivity for C–C and C–N coupling reactions. While iodine offers higher reactivity, supply chain risk and elevated cost stand as hurdles for scale-up; chlorinated analogues often lack sufficient reactivity under milder reaction conditions.

    Production teams in industrial facilities and academic research settings alike use 2-Bromofluorene to craft ligands, specialty dyes, and molecular scaffolds with extended π-conjugation. The residue limits following purification typically meet or exceed the established international standards for advanced chemical building blocks. Trace metals—often from catalytic cycles—are monitored closely, since even low ppm levels can hinder subsequent synthesis or cloud spectral readings. Shipping and storage protocols reflect the true needs of those who will rely on this intermediate in air-sensitive or moisture-sensitive protocols: sealed, inert, and protected against excess heat.

    Supporting the Research Community

    On the R&D side, chemists respect intermediates like 2-Bromofluorene for their reliability. As a manufacturer, feedback from our collaborators routinely leads to process tweaks that improve yield, minimize decomposition, or simplify downstream purification. Clients working up new routes for pharmaceuticals or electronic materials want clean conversion in Suzuki-Miyaura couplings, Buchwald-Hartwig aminations, and more exotic radical-based transformations. Test reactions at both lab and multi-kilogram scales give results where batch purity, particle size, and storage age all show measurable impacts.

    Real-world case studies from polymer chemistry provide telling examples. Some clients synthesize high-performance polyfluorenes for OLED devices or solar energy applications. The consistency in 2-Bromofluorene purity reduces the need for excess purification steps, translating to both cost and time savings, especially vital at scale. When switching between sources, even a half-percent difference in impurity level forces extra time under reduced pressure or more rounds of flash chromatography. Our commitment to monitoring and reporting on these critical-to-function variables supports faster innovation in downstream sectors.

    Economic and Practical Considerations in Sourcing

    From manufacturing floors to pilot R&D suites, one persistent truth informs our workflow: predictability in the supply and quality of 2-Bromofluorene preserves project momentum. Unlike rare starting materials, the precursor chemistry for this compound supports ready scalability without tying up stains of capital in oversized reactors or rare catalysts. Robust proprietary purification and isolation steps cut down on overall processing time. Large-scale chemical producers benefit from this reliable throughput, as it leads to reductions in waste, better recycling of reaction solvents, and alignment with evolving environmental goals.

    Environmental regulation intensifies each year, with increasing focus on halogen-containing intermediates. Most facilities now operate under strict emissions caps and water treatment requirements. From our side as a producer, technology upgrades to distillation columns, nitrogen blanketing, and thermal oxidizers limit brominated volatile organic emissions. Stringent tracking and documentation at every stage facilitate seamless audits and compliance checks; we view this as not just a legal necessity, but a matter of professional integrity. Over decades of producing specialty intermediates, it becomes clear the companies who prioritize environmental care alongside efficiency see stronger demand, longer contracts, and more trust from sophisticated clients.

    Why 2-Bromofluorene Remains Core to Synthesis

    Following real-world feedback, 2-Bromofluorene’s role as a core intermediate is here to stay. Adjustments in global supply, demand spikes driven by new OLED and specialty coating applications, and pressure to reduce the environmental impact keep this one intermediate firmly in the spotlight inside manufacturing operations. Process engineers working with us seek predictable melting points, free-flowing solid state, and well-documented spectral characteristics. Repeat batch success, not merely adherence to a spec sheet, matters to everyone engaged in scaling advanced chemical products.

    A major point of comparison between 2-Bromofluorene and analogous halofluorenes is the cost-performance ratio. Iodinated species, for example, serve where ultimate reactivity is needed, but brominated analogues offer the trade-off that matters to most large facilities: just enough reactivity to run reliably under mild conditions, but at a lower price point and with a much more stable sourcing arrangement. Meanwhile, the chlorinated materials typically suit only certain industrial processes, requiring higher temperatures or specialized catalysts. Laboratories that made the switch to 2-Bromofluorene for pilot programs often report higher yields and a smoother handoff between scale-up and production phases.

    Lessons from Working with 2-Bromofluorene

    In the real world of specialty chemical manufacturing, lessons come by way of the physical batch, not the theoretical pathway. Early on, production lines struggled with batch variability due to off-gassing of brominated volatiles and inconsistent drying protocols, which affected both storage stability and downstream reactivity. A tight collaborative loop between QC teams and process engineers eventually refined the drying and sealing steps, drastically reducing both product loss and complaints over “off” batches reaching end-users.

    Another core challenge: maintaining batch-to-batch NMR fingerprint consistency. Compounds intended for further synthetic elaboration react to even low-level contaminants, sometimes stalling reactions. We heard from one client using 2-Bromofluorene as a scaffold in the synthesis of biaryl ligands for asymmetric catalysis. Inconsistent purities hampered their ability to secure patents, as stray peaks in reference spectra forced additional lengthy analytical work. After refining purification stages and putting additional quality gates in place, both parties saw improvement in workflow confidence.

    Technological Innovation and Its Effects

    Years in specialty manufacturing teach that innovation can arise from even small changes. Adoption of continuous processing, for example, reduced residual solvent levels and improved yield consistency per run. Automated packing under nitrogen in glass and HDPE lined drums increased shelf life by several months, much appreciated by buyers stockpiling for campaign synthesis. Interfacing line data with cloud-based or blockchain traceability aids, in turn, reassures clients that their materials have been made, handled, and stored under real verified controls.

    Direct partnerships with end-user laboratories give real feedback about how crystal size, color, and low-level impurities make their daily work easier or harder. Accelerated stability studies help validate new packing or storage methods, often identifying ways to reduce solvent loss or caking over long-term storage. Manufacturers that invest in bench-level testing—as opposed to only in-process QA—see measurable gains in trust and customer retention, especially with materials destined for regulated or high-stakes applications.

    2-Bromofluorene’s Place in Advanced Synthesis

    Inside manufacturing plants, experienced teams understand that correctly handled 2-Bromofluorene enables creation of high-value specialty compounds which influence technologies many take for granted. OLED displays, specialty plastics, pharmaceuticals, and advanced research tools all rely on intermediates that do their job silently but effectively. In a typical year, broadening end-user needs force adaptation. Demand from academic synthesis surges during periods of grant funding, while industrial users drive bulk orders tied to automotive electronics or personal care products.

    Because this compound often passes through several hands on its way to a final product, traceability in supply matters. Clients ask for proof of batch origin, purity documentation, and even environmental audit data; centrally controlled documentation bolsters this confidence and cements long-term relationships. Our habits of regular batch re-testing make a difference to those who run long campaigns or operate pilot reactors where margin for error tightens with each scale-up. The lesson drawn repeatedly: materials that “just work” in bench reactions earn a steady spot in process chemists’ toolkits.

    Addressing Future Challenges

    Looking ahead, the chief challenges for 2-Bromofluorene manufacturing revolve around both rising regulatory demands and technical advancements in synthesis. Environmental agencies question the lifecycle of brominated intermediates—how they’re handled and their eventual disposal—and demand evidence of sustainability in sourcing and post-use treatment. Our protocols now include recycling of processing solvents, capture and neutralization of brominated off-gases, and on-site treatment to minimize impact on surrounding communities. Energetic investment in these practices isn’t just regulatory compliance; it’s a recognition that sustainable manufacturing delivers a more reliable business in the long term.

    On the technical side, we keep watch on methods such as direct C–H activation, which promise to bypass the need for halogenated intermediates. For now, the reproducibility and flexibility of brominated compounds remain unmatched for certain reactions, but market signals push continual improvement. Each process upgrade and supplier innovation brings competitive pressure, incentivizing us to maintain high standards and open feedback loops with our clients at every stage. Only by refining both our products and our responsiveness can we keep up with the pace of specialty chemical development around the world.

    Conclusion: Commitment to Quality and Reliability

    Producing 2-Bromofluorene may seem routine from outside, but for those engaged in custom synthesis, polymer innovation, or the search for better molecular electronics, its consistent quality and ready availability remove friction in day-to-day work. Over the past decades, evolving applications—from OLED screens to novel drug scaffolds—have brought new scrutiny and higher demands to suppliers of this intermediate. Every batch reflects our experience, investment in analytical technique, and readiness to listen to each user’s feedback.

    Success in the fine chemical world hinges on trust, repeatability, and speed of adaptation. Our contribution lies not only in shipping kilograms of 2-Bromofluorene, but in partnering to troubleshoot, refine, and continuously upgrade this material’s performance as new challenges arise. Through meticulous manufacturing and long-term relationships, specialty intermediates like this one keep innovation moving across scientific, industrial, and technological frontiers.