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4-Bromo-1-Methylpyrazole-5-Carboxaldehyde

    • Product Name 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde
    • Alias 4-Bromo-1-methyl-1H-pyrazole-5-carbaldehyde
    • Einecs EINECS 620-139-4
    • 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

    238863

    Productname 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde
    Molecularformula C5H5BrN2O
    Molecularweight 189.01 g/mol
    Casnumber 1421375-27-8
    Appearance White to off-white solid
    Purity Typically ≥ 97%
    Solubility Soluble in DMSO, DMF
    Smiles Cn1nc(C=O)cn1Br
    Inchi InChI=1S/C5H5BrN2O/c1-8-3-4(6)7-5(8)2-9/h2-3H,1H3
    Storagetemperature 2-8°C (refrigerated)

    As an accredited 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

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    Application of 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde

    Applications of 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde in Industrial Manufacturing

    4-Bromo-1-Methylpyrazole-5-Carboxaldehyde is a specialty intermediate manufactured for several critical downstream industries, supporting the synthesis of high-value compounds in pharmaceuticals, agrochemicals, and advanced material chemistry. Our manufacturing process ensures batch traceability, consistency, and compliance with sector-specific requirements, enabling trusted integration into complex industrial formulations. The following section details real application scenarios, highlighting unique usage contexts, regulatory frameworks, formulation practices, integration into industrial processes, and the spectrum of finished products downstream customers can produce.

    1. Active Pharmaceutical Ingredient (API) Synthesis: Pyrazole-Based Drug Development

    Pharmaceutical manufacturers apply this intermediate in pyrazole ring construction during the multi-step synthesis of patented and generic APIs, especially in the development of kinase inhibitors, anti-inflammatory agents, and central nervous system (CNS) actives. The aldehyde function enables selective coupling in Suzuki-Miyaura and other cross-coupling reactions integral to medicinal chemistry. Downstream partners require analytical purity, absence of residual starting materials, and assurance of full regulatory documentation for downstream DMF filings.

    Industry compliance standards

    • ICH Q7 GMP for APIs
    • 21 CFR Part 210/211 (US FDA)
    • European Pharmacopoeia (Ph. Eur.) General Monographs
    • China NMPA Drug Registration Quality Management

    Typical usage ratio

    • 0.1–0.6 molar equivalents per synthetic step, adjusted according to drug candidate's molecular pathway and target yield

    Downstream process integration

    • Introduced in route steps where the pyrazole core undergoes ring functionalization via condensation or reductive amination, typically prior to halogen exchange, cyclization, or amidation stages in multi-kilo batch reactors

    Final product types

    • Small molecule APIs (e.g., novel kinase inhibitors, analgesic compounds, CNS therapeutics)
    • Pharmacological intermediate libraries for medicinal chemistry screening

    2. Agrochemical Intermediate for Pyrazole Herbicide and Fungicide Synthesis

    Crop protection manufacturers utilize 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde as an essential starting material in the production of pyrazole frameworks that confer selective activity in modern fungicides and herbicides. Its unique substitution pattern enhances binding specificity in new generation non-systemic agrochemicals. Adherence to agrochemical industry regulation on impurities, batch homogeneity, and trace metal content forms part of downstream product registration dossiers, especially for new active ingredient launches in regulated markets.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • European Union Regulation (EC) No 1107/2009
    • US EPA Pesticide Registration Standards
    • ISO 9001:2015 for agrochemical intermediate manufacturing

    Typical usage ratio

    • Used at 0.2–1.0 parts by weight per 10 parts of total intermediate mass in active synthesis, based on the final molecule’s pyrazole incorporation route

    Downstream process integration

    • Fed into initial condensation or coupling stage for pyrazole ring formation, often combined with hydrazine derivatives or as a substrate for directed bromination/cyanation additions in continuous stirred-tank reactors

    Final product types

    • Active ingredients in broad-spectrum triazole fungicides (e.g., azoxystrobin analogs)
    • Selective pre- and post-emergence herbicides
    • Pyrazole-based safeners and antimetabolites

    3. Advanced Building Block for Specialty Chemical Synthesis

    Specialty chemical producers incorporate this pyrazole-based aldehyde in the development of high-performance intermediates aimed at electronics, dye, and photographic chemical segments. The aldehyde group participates in fine chemical transformations, such as Wittig, Knoevenagel, or Grignard reactions, producing complex scaffolds not readily available from other aromatic aldehydes. Compliance focuses on low residual solvent levels and adherence to environmental standards critical for downstream specialty markets.

    Industry compliance standards

    • REACH Registration (EC No 1907/2006) for specialty intermediates
    • International Electrotechnical Commission (IEC) QC requirements for electronics sector precursors
    • ISO 14001:2015 Environmental Management System
    • Japan Chemical Substances Control Law (CSCL)

    Typical usage ratio

    • Typically charged at 2–10% by mol in colored compound synthesis or as a limiting reagent in photoresist and dye precursor formation

    Downstream process integration

    • Applied during key condensation and coupling steps involving C=N or C=C bond formation, often as a terminal functional group setting in multi-step synthesis of specialty dye bases or photoactive compounds

    Final product types

    • Color-fasten dye intermediates for textile inks
    • Photolithography sensitizers in microelectronics
    • Specialty imaging chemical building blocks

    4. Research Chemical Intermediate for Custom Synthesis and CRO/CDMO Use

    Contract research organizations (CROs) and contract development and manufacturing organizations (CDMOs) employ 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde in custom syntheses, validation of reference standards, and process route scouting, particularly for pyrazole library expansion. They demand tight control over batch-to-batch variability, full analytical characterization, and availability of impurity profiles to support non-clinical studies and regulatory filings for early-stage drug discovery under GLP and GMP-lite systems.

    Industry compliance standards

    • OECD Good Laboratory Practice (GLP) for preclinical chemical use
    • ICH Q11 for API development
    • Sigma-Aldrich and Merck in-house analytical certification protocols for research-use chemicals
    • Synthetic methodology benchmarking under USP General Chapter <621> (Chromatography)

    Typical usage ratio

    • Variable, typically 5–100 mmol scale per reaction, dependent on target compound and screening scope; adjusted for substrate reactivity and batch throughput

    Downstream process integration

    • Directly introduced as a key building block into the first or second stage of multi-step, solution-phase syntheses or combinatorial library reactions for rapid analog exploration

    Final product types

    • Structural reference compounds
    • Preclinical candidate molecules for patent and activity screening
    • Analytical standards for regulatory submissions

    5. Intermediate for Veterinary Pharmaceutical Synthesis

    Veterinary drug manufacturers source this intermediate to enable ring formation in the synthesis of pyrazole-class antiparasitic and anti-inflammatory actives for livestock and companion animals. The bromo-functionalized pyrazole supports functionalization pathways not accessible via simpler pyrazole cores. Finished product launch requires full documentation of impurity profile and traceability in compliance with veterinary drug approval systems worldwide.

    Industry compliance standards

    • VICH GL1–GL9 veterinary drug guidelines
    • US FDA Center for Veterinary Medicine (CVM) GMP
    • European Directive 2001/82/EC for veterinary use medicines
    • ISO 9001 for pharmaceutical ingredient manufacturing

    Typical usage ratio

    • 0.04–0.3 molar equivalents in lead intermediate synthesis; tuned by animal species' drug label requirements and safety margins

    Downstream process integration

    • Fed as a limiting reactant in cyclization or side-chain extension steps to lock in bromo-substituted pyrazole architecture in kilogram-scale batch production

    Final product types

    • Veterinary-approved anthelmintic intermediates
    • NSAID drug actives for livestock
    • Specialty combination veterinary formulations
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    More Introduction

    4-Bromo-1-Methylpyrazole-5-Carboxaldehyde: A Key Starter For Chemical Synthesis

    A Closer Look at 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde

    Chemistry sometimes feels like a never-ending puzzle of building blocks. One tiny change in a molecule changes the whole game, especially in pharmaceutical development and advanced material science labs. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde might sound like just a technical mouthful, but it actually makes a big impact for many researchers and developers. This compound rolls off the tongue more easily for chemists who've worked with pyrazole derivatives, and for those who've ever spent time hunting for just the right starting material, landing on substances like this matters. It isn’t some obscure footnote in the chemical supply catalog; it often becomes a staple for researchers exploring better routes in medicinal chemistry.

    Structure, Model, and Practical Relevance

    The model for 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde is built on a pyrazole core. With a methyl group snagging one position, a bromo atom at another, and an aldehyde group perched on the ring, it brings versatility to chemical reactions. This unique structure means it serves as more than a generic raw material; the combination of its functional groups opens doors in synthesis that might otherwise stay closed. For example, its aldehyde group is reactive, able to slip into a wide range of reactions, while the pyrazole ring anchors pharmacological interest.

    Getting hands-on with this compound usually involves watching how the bromo atom allows for cross-coupling strategies. For chemists trying to expand a library of new molecules, or for those working out the kinks in novel drug formulation, these features turn a theoretical possibility into a reliable bench-top reality. The difference between theory and practice can be as slim as a substitution on a pyrazole ring, and that’s where this compound proves its value.

    Diving Into Its Specifications

    Chemists at the bench want certainty, and that starts with physical and chemical reliability. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde arrives as a carefully designed chemical with a purity level that often stretches above 97%. This high degree of purity isn’t just about ticking off a box on a specification sheet. Downstream reactions can hinge on this, especially if the goal is to limit byproducts or avoid false positives during screening procedures. As someone who's seen the chaos that follows an impure reagent—one faulty step means repeating days, sometimes weeks, of work—purity brings peace of mind.

    On the practical side, its formula weighs in comfortably, not prone to volatility that would disrupt regular lab use. It usually appears as an off-white or light yellow solid, with a melting point that keeps it stable on the shelf yet easy enough to work into most reaction conditions. Proper storage in airtight containers, away from direct sunlight or extreme temperatures, allows it to maintain consistency between batches, and experienced chemists take that kind of reliability seriously.

    Usage: Not Just Another Reagent

    Using 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde in a chemical sequence feels different from working with generic building blocks. Researchers working in medicinal chemistry often aim for selectivity and efficiency, and the methyl-pyrazole motif shows up in a surprising number of clinical candidates. It becomes a bridge to a wider set of molecules, thanks to its functional groups that respond well to common transformations. The bromo substituent gives room to explore Suzuki or Heck couplings, while the aldehyde lets chemists dive into condensations and reductive aminations.

    For those who haven’t handled these kinds of compounds before, it’s worth knowing that this chemical doesn’t require elaborate activation or obscure catalysts—regular cross-coupling agents and standard reaction conditions get the job done. If a team is developing kinase inhibitors or investigating new agrochemical prototypes, this aldehyde often becomes the workhorse in the early to mid-stages of synthesis. It gives researchers access to more complex heterocycles and lets them tune properties for biological activity.

    Chemistry sometimes means weighing cost, time, and outcome – and anyone who’s juggled a research budget can appreciate how reliable starting materials allow for clearer calculations. Getting stuck with a hard-to-handle intermediate slows down a whole lab, so ease of handling turns into a genuine value, not simply a convenience.

    Shaping the Research Pipeline

    Many ideas for new medicines or advanced materials never leave the whiteboard, not because of a lack of vision but because the synthetic route gets bogged down. Compounds like 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde act as real-world enablers. An accessible route to substituted pyrazoles gives teams reason to push riskier, more innovative projects. That open access becomes part of the competitive edge, especially for startups or smaller research outfits that don’t have the luxury of dedicated process chemists.

    Stories circulate around labs about how one tried-and-true intermediate turns into an unforeseen shortcut—saving time and frustration across entire discovery projects. In some cases, the same intermediate used for a medicinal project finds new life in material science, especially since pyrazoles can bring interesting optical or electronic properties to specialty chemicals.

    It’s not just about being efficient; the right building block can reveal unexpected chemical space, letting chemists navigate toward properties like improved selectivity, better solubility, or metabolic stability. Long hours at the bench sometimes sneak up on teams just because a reaction sequence won’t cooperate—using a well-understood and widely tested intermediate feels like a worthwhile investment for anyone who values practical research outcomes.

    How It Stands Apart: More Than The Sum of Its Parts

    The marketplace is full of pyrazole derivatives and aldehydes; that much is true. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde stands out thanks to its specific pattern of substitution. Adding a methyl group to the ring not only distinguishes it from unsubstituted analogs but influences the electronic and steric environment for downstream chemistry. The placement of the bromo atom introduces a handle for cross-coupling, setting it apart from similar aldehydes without that feature.

    I’ve seen colleagues wrestle with less-selective or more hazardous reagents, forced to take safety regulations into account or deal with tedious purification. In contrast, this compound tends to behave in predictable ways, reducing the likelihood of side reactions that can undermine scale-up. Where some building blocks introduce headaches with air or moisture sensitivity, this one runs with standard glovebox or Schlenk line protocols, which saves time and resources. Not needing to babysit every step lets scientists shift focus to more strategic problems.

    There’s a tendency in chemical catalogs to lean on buzzwords about “ease of use” or “broad applicability.” With 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde, practical experience often means it bridges gaps between different research goals, whether someone is optimizing a pharmaceutical lead or laying down new patterns for functional materials. For every researcher tired of running down obscure, expensive, or wasteful intermediates, the predictable reactivity and straightforward work-up of this compound help move science forward.

    Chasing Reliability in Modern Chemical Synthesis

    Years in laboratories teach anyone the value of reliability. Watching a project stumble because one bottle, one supplier, or one overlooked impurity brought things to a halt leaves a lasting memory. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde represents a kind of reliability born out of widespread use and straightforward characterization. The simplicity in melting, dissolving, and reacting without elaborate gymnastics makes a difference across dozens of research cycles.

    People new to synthetic chemistry may take reagent consistency for granted, but nothing stings a veteran chemist quite like repeating failed reactions. The chain from first planning to final product depends on aggressively vetted starting materials, and reordering this pyrazole aldehyde doesn’t invite nasty surprises between batches. That sort of consistency isn’t universal. It’s built and maintained by supplier standards, but also reinforced by daily use across research groups worldwide.

    Sustainability and Safety: Choosing Wisely

    Modern labs run on a blend of safety, sustainability, and successful outcomes. Choosing a reagent like 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde makes sense in this climate. It offers a lower hazard profile compared to some of the more aggressive bromo compounds. I’ve been in rooms where entire research tracks hit a wall because of safety committee reviews. This compound passes those hurdles more smoothly, fitting into both fume hood and glovebox routines with manageable risks.

    Waste reduction is no longer a warning at the end of a protocol but a requirement throughout chemical design. Because of this compound’s efficiency in key transformations, less waste ends up in the work-up stage. Fewer side products translate to cleaner reactions and less time spent chasing purity. Labs working on green chemistry efforts benefit from reduced solvent use, aligning well with broader trends in environmentally-conscious research.

    It’s a practical truth that resource optimization now means less hazardous waste and less regulatory red tape. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde enables streamlined processes, and this isn’t limited to high-throughput screening hubs or industrial giants. Educational labs and mid-size research organizations appreciate the ability to advance work without accumulating excess hazardous material. As someone who’s kept one eye on the solvents jug and the other on the research schedule, minimizing regulatory headaches adds legitimate value.

    Translating Research To Real-World Impact

    Innovative molecules don’t reach pharmacy shelves or functional devices without reliable intermediates at every stage. In drug discovery, pyrazole scaffolds deserve their reputation for biological activity, making them common in kinase inhibitors, anti-inflammatory drugs, and antifungal candidates. The methylation and bromo groups in this particular aldehyde let chemists steer subsequent reactions with sharper selectivity, helping teams design and tune their molecules.

    Production-scale chemistry relies just as much on the quality of building blocks. During pilot programs or larger commercial campaigns, consistent reaction yields and manageable purification steps keep budgets and timelines in check. Seeing small-scale results scale up smoothly becomes a point of pride and relief for seasoned process chemists, who know all too well how bottlenecks in one reaction cascade through whole projects.

    As research groups chase new targets—whether it’s a better drug, a longer-lasting material coating, or a custom fluorescent dye—being able to plan reliably from the synthetic bench to finished application creates a smoother route to innovation. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde doesn’t claim that spotlight, but it gives every downstream process a fighting chance at getting there.

    Mistakes, Misconceptions, and Lessons Learned

    It’s tempting to treat chemical reagents like interchangeable puzzle pieces. Yet, anyone with lab experience understands how much the right or wrong intermediate can affect a project. Some early-career chemists look for a shortcut using more generic aldehydes, only to find tricky downstream modifications or more labor-intensive purifications. Time after time, 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde takes out some of this guesswork. Its selectivity in reactions removes uncertainty, meaning fewer costly setbacks and a more direct path to the desired product.

    Of course, it’s not a magic solution. Success still depends on technique, the right reaction conditions, and a willingness to iterate. Yet, speaking from experience, the headaches avoided with a smart choice of intermediate do add up. Watching a novice chemist make fast progress because they have the right starting material reminds experienced hands why these details matter.

    Labs with tight deadlines, limited budgets, or big ambitions have enough uncertainty to juggle as it is. Relying on a compound with a proven track record helps keep energy focused on problems worth solving, not unnecessary troubleshooting.

    Comparing With Other Building Blocks

    Browsing chemical catalogs quickly reveals endless options that look similar, at least on paper. The difference between a small tweak in the substituents, or an alternative position for the functional groups, can mean game-changing alterations in reactivity. For developers working with heterocyclic chemistry, choosing 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde means no need for later-stage bromo introduction or methyl group placement, which sidesteps extra synthetic steps and purification headaches.

    Those who’ve experimented with non-methylated or differently substituted pyrazoles know the limitations. Extra steps crop up in increasing yields or tuning solubility. Using this particular aldehyde cuts down those complications and, in experienced hands, translates to sharper results in SAR (structure-activity relationship) experiments or combinatorial chemistry.

    While some aldehydes can be more volatile or prone to polymerization, this compound’s handling serves researchers with better shelf life and less risk of decomposition before use. The net effect: more consistent performance from reaction to reaction and a higher chance of accessing new chemical space.

    Supporting Progress in Science and Industry

    Good science stands on the shoulders of good materials. In the industrial sector, where mistakes mean significant delays, every detail in a starting material gets scrutiny. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde has emerged as a trusted workhorse not because of marketing hype but through years of stable, repeatable results. Its profile suits the needs of both nimble research labs and large-scale manufacturers, which attests to its staying power in the chemical landscape.

    Designing a lab protocol doesn’t happen in a vacuum. Researchers look for compounds that align with both the stringent requirements of regulators and the unpredictable twists of real-world chemistry. Products that offer predictable reactivity, straightforward purification, and compatibility with common synthetic techniques help move research out of bottleneck territory. By delivering on these fronts, this pyrazole derivative earns its spot alongside other key intermediates relied on for the synthesis of new pharmaceuticals and advanced materials.

    A Path Forward: Meeting Future Challenges

    The future of chemistry will demand more reliable access to specialty intermediates, safer workspaces, and more environmentally sound processes. As research questions get more complex, the building blocks enabling those answers will see more scrutiny. 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde, with its practical synthesis profile and manageable risk, fits the bill across the board.

    Education also enters the conversation. Training the next wave of scientists on reliable, well-understood reagents provides a foundation for safe, innovative research. By giving students and early-career professionals dependable access to high-purity intermediates, science as a whole builds a culture that values robust, repeatable progress.

    Solutions for sustainable innovation must embrace the lessons of the past with the right materials. Any chemist with long hours behind the bench recognizes that a project’s fate may well depend on smart reagent choices as much as clever strategy or luck. With intermediates like 4-Bromo-1-Methylpyrazole-5-Carboxaldehyde, the chemistry community secures a reliable tool for today while setting up stronger progress for tomorrow.