5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione

    • Product Name: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione
    • Chemical Name (IUPAC): 8,9-dihydro-5H-cyclohepta[b]pyridine-5,9-dione
    • CAS No.: 444567-41-5
    • Chemical Formula: C9H9NO2
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@bouling-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
    • CONTACT NOW
    Specifications

    HS Code

    969547

    Iupac Name 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione
    Molecular Formula C10H9NO2
    Molecular Weight 175.18 g/mol
    Cas Number 16641-91-1
    Smiles O=C1CCc2c(cccn2)C1=O
    Inchi InChI=1S/C10H9NO2/c12-9-3-1-2-7-6-11-5-4-8(7)10(9)13/h4-6H,1-3H2
    Appearance Light yellow solid
    Melting Point 232-236 °C
    Solubility In Water Poorly soluble
    Purity Typically ≥98% (commercially available)

    As an accredited 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle, 25 grams, white screw cap, tamper-evident seal, chemical label displays name, formula, CAS, and hazard warnings.
    Container Loading (20′ FCL) 20′ FCL: Securely packed in HDPE drums, 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione is loaded on pallets for export.
    Shipping The chemical 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione should be shipped in tightly sealed containers, protected from light and moisture, and labeled according to hazardous material regulations. Appropriate cushioning and secondary containment must be used. Comply with DOT, IATA, or IMDG regulations for transport, ensuring all documentation, labeling, and hazard communication are in place.
    Storage **Storage description for 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione:** Store in a tightly sealed container, protected from light and moisture, in a cool, dry, and well-ventilated area. Keep away from incompatible substances such as strong oxidizing agents. Recommended storage temperature is 2–8°C (refrigerator). Ensure proper labeling and restrict access to authorized personnel only. Follow all local and institutional chemical storage regulations.
    Shelf Life `5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione` should be stored cool and dry; typical shelf life is 2-3 years.
    Application of 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione

    Purity 98%: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with purity 98% is used in pharmaceutical synthesis, where it ensures high yield and minimal by-product formation.

    Melting point 155°C: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with melting point 155°C is used in solid-state formulations, where it facilitates precise melting and processing.

    Molecular weight 173.18 g/mol: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with molecular weight 173.18 g/mol is used in chemical reaction modeling, where predictable mass balance is achieved.

    Stability at 120°C: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with stability at 120°C is used in thermally demanding reactions, where consistent chemical integrity is maintained.

    Particle size <10 μm: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with particle size <10 μm is used in catalyst support matrices, where enhanced dispersion and surface area are obtained.

    Solubility in DMSO 20 mg/mL: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with solubility in DMSO 20 mg/mL is used in bioassays preparation, where homogeneous test solutions are ensured.

    UV absorbance Λmax 285 nm: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with UV absorbance Λmax 285 nm is used in analytical detection protocols, where accurate quantification is facilitated.

    Residual water <0.3%: 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with residual water <0.3% is used in moisture-sensitive organic reactions, where unwanted side reactions are minimized.

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    Certification & Compliance
    More Introduction

    5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione: Precision and Confidence in Pyridine Chemistry

    Direct from the Manufacturer’s Bench

    Chemical manufacturing isn’t about guesswork. Each kilogram of 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione rolling off the production line stands for months—sometimes years—of development, stringent refining, and hands-on quality control. From the synthesis route choice to the packing drum, experience and deep knowledge steer each step. Coming from a team that has built its expertise batch after batch, every flask run brings improvements learned from the last. In our world, the best chemistry happens on purpose.

    The Core: Quality You Can Validate

    5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione sits in a unique class. It blends the cyclohepta framework with a fused pyridine, expanding the possibilities for research and synthesis. We see the difference when we look at the FTIR and NMR: clean spectra, clear peaks, no background noise or solvent residues. Certified HPLC purity regularly exceeds 99%. Water and ash content always comes in well below 0.5%. These things matter: anything less leads to off-target reactivity or inconsistent performance in scale-up. That’s why every batch ships with full analytical details, traceable straight through our own logs—not borrowed from a third party.

    Model and Grades to Meet Advanced Needs

    We tune our production of 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione to the settings demanded by top industrial and pharmaceutical research programs. We aren’t chasing commodity throughput; we’re after tight control and reproducibility. Each grade reflects ongoing dialogue with process engineers and chemists, many of whom have stopped by our shop floor or sent their feedback on tricky runs. We offer a research grade free of stabilizers and a technical grade for robust intermediate applications. All are produced in reactors that have never processed unrelated chemical families. We never cut corners by repurposing equipment or co-mingling process streams.

    Specifications Anchored in Reality

    Each drum of 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione leaves our plant only when it clears actual analytical checkpoints. After fine filtration to meet particle size cut-offs, every batch is bottle-tested for solubility. Color is measured visually and spectroscopically. Odor and physical form get noted. NMR and mass spectrometry reports aren’t abstract checkboxes; they’re evidence of batch fidelity, and they get archived together with full batch records. Measuring impurity profiles isn’t about hitting a theoretical spec. Each impurity peak gets traced back to a source, whether a side reaction, incomplete workup, or trace contamination. Problems don’t disappear behind paperwork; they get fixed.

    Where 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione Excels—and Why

    This compound didn’t exist on the commercial market for years. Labs scrambled to cobble together custom syntheses, often sacrificing purity for speed. By locking in robust cyclization procedures and investing in isolation and purification infrastructure—column systems, crystallizers, dedicated drying rooms—our process can deliver multikilogram lots that re-crystallize cleanly and can be monitored down to trace ppm levels of precursors or side products. Our purity claims stand up when customers test on their GC or HPLC in-house.

    Researchers in organic synthesis and medicinal chemistry often tell us why this molecule draws their attention: the structure opens doors for further functionalization, giving chemists more options for building up complex molecular scaffolds. Pyridine-fused rings form the backbone for a host of potential N-heteroaromatic derivatives relevant in drug discovery. When the starting material comes contaminated or degraded—an all-too-common problem with marginal suppliers—yields drop, and the time spent troubleshooting begins to eclipse research itself.

    Practical Handling and Application Insights

    We don’t ship chemicals out the door as abstract entities. Each kilogram is the result of our process chemists’ daily work: confirming the right crystal habit, watching for signs of hydrate formation, logging melting points batch by batch. From transportation to lab transfer, our packaging schemes guard against moisture pickup and oxidation. Even minor handling slip-ups matter at the kilo scale, especially with molecules as sensitive as pyridine diones. Shelf life matters to us because we store and sample our own inventory, not just what’s earmarked for sale.

    Every chemist who scales up synthetic routes with our product wants fewer headaches, more reproducible reactivity, and less need for downstream clean-up. With this foundation, medicinal chemistry teams and process development researchers aren’t working uphill. Trials show they can push their next synthetic transformation without rerunning purification protocols at every step. This feedback cycle, where actual end-users report successes and issues, shapes each subsequent production run.

    Comparing 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione to Other Pyridines and Ketones

    Chemists who’ve worked with everything from simple pyridines to elaborate diketones quickly spot the difference. Generic pyridines offer aromatic nitrogen, but lack the extra reactivity and rigidity introduced by the fused cyclohepta ring. Standard diketones often force users to contend with isomeric contamination or unpredictable reactivity with nucleophiles. Our product provides a robust, highly defined scaffold, giving control over subsequent functionalisations. Many competitors source their feedstock from bulk origin, polish it up a bit, and resell. We begin with raw material verification and keep each production unit ring-fenced from any non-pyridine intermediates, so cross-contamination risk stays at absolute minimum.

    Unlike many derivatives, our 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione displays reliable solubility profiles in standard solvents used across medicinal and synthetic chemistry. Researchers confirm this advantage when switching from other pyridine variants or attempting longer transformations, where batch-to-batch inconsistencies with competitor samples waste valuable time and reagents. This feedback led our process team to adopt further in-line monitoring to catch trace heterocycles or residual mineral acids that show up in poorly handled commercial material.

    Supporting Reliable Research Outcomes

    Bench scientists working with complicated synthetic pathways need intermediates that do what they are supposed to—every time. The chain is only as strong as its weakest link, and unreliable material quality shaves months off research schedules. By handling all production phases under our own roof, we can address the root causes of headaches: inconsistency, trace byproducts, storage variability. That’s why customers send their graduate students and postdocs to our lab for technical visits and why production chemists in major pharmaceutical firms reach out directly when projects bottleneck.

    Real-world impacts unfold in ways the numbers alone can’t show. In one partner’s recent antitumor agent program, quality swings in starting materials from uncontrolled sources threw the timeline off by weeks. Our high-grade batches allowed them to reproduce critical steps and meet regulatory QA demands with no rework. Pharmaceutical process teams share stories of slashing column purification runs in half and improving conversion yields, simply by plugging in consistent feedstock from our reactors.

    Limitations, Challenges, and Process Insights

    Every molecule carries its baggage. 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione isn’t immune. The compound’s sensitivity to strong acids and bases rules out certain purification strategies and makes high-throughput scaling trickier than it may appear on paper. Our manufacturing team tackled these bottlenecks with pilot-scale trials, modifying both workup and crystallization steps until the product stood up to industrial scrutiny.

    We face a world where batch-to-batch reliability cannot be assumed. Feedstock quality—origins of starting ketones, solvents, trace mineral content—shapes the final product’s character, especially for advanced intermediates. Most supply-chain hiccups have real downstream effects, revealing themselves only at the worst possible moment. A few cent’s difference in raw input can trigger a thousand-dollar loss in failed batch reactions. Our on-site feedstock analysis helps prevent these last-mile disasters.

    Traceability, Transparency, and Trust

    Trust develops over time. Laboratories return not for a name, but for a track record of performance. We stand behind every unit of 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione with full manufacturing data, traceable lot histories, and human beings at the other end of the phone or email. We hear from researchers about how minor variances flagged in our supplied certificates of analysis frequently become critical clues in surprising outcomes—good or bad.

    Transparency about analytical challenges matters. There are no perfect batches in the real world, only acceptably tight tolerances. We update our Certificates of Analysis as analytical capabilities improve and feed these advances right into our QC protocols. Our customers appreciate—sometimes even demand—batch samples and independent third-party testing, and we encourage it. We keep open lines so feedback, from complaints to praise, finds its way directly to production leads who can act.

    Supporting Scale: From Milligrams to Kilograms

    Lab-scale production often glosses over difficulties that mushroom in the plant. By designing process units to mimic scaled laboratory conditions, we anticipate slow-downs before they gum up production. Our operators have deep enough experience to spot off-normal crystal morphology or color shifts as harbingers of a fouled run, and interventions happen in real time. This hands-on vigilance prevents compromised material from ever reaching customer labs.

    In scale-up, logistics matter. As a chemical manufacturer who has handled countless packing and delivery operations, our experience shapes every stage—from planning stabilized packing liners to staggering logistics so that sensitive intermediates avoid exposure at customs or in warehouse cross-docking. Customers share their stories about shipments showing up ready for immediate use, no need to rerun drying or filtration steps.

    Environmental and Regulatory Responsibility

    Our production methods reflect a commitment to responsible manufacturing—this isn’t just talk. Waste minimization arrives not as a slogan, but as a reflection of every operator’s routine. We consolidate solvent streams and capture recoverable byproducts wherever possible. Our regulatory filings match what’s on paper to what happens live in production, a practice enforced by years of real audits and customer scrutiny.

    Each kilogram produced passes through properly engineered venting and solvent recovery, cutting environmental output to below regulated limits. The same care given to product quality extends to every drum of waste shipped out, documented and logged. For those in regulated fields—pharma, biotech, specialty polymers—this level of diligence is non-negotiable. Our own reputation depends on customers clearing their product audits and downstream regulatory hurdles without issue.

    Practical Solutions for Real-World Research

    Challenges rarely follow a script. In over a decade of manufacturing advanced N-heterocyclic intermediates, we’ve learned that the best solutions grow out of genuine partnership with our users. We adapt our process parameters, reevaluate supplier chains, and refine each batch based on the daily demands of real research schedules.

    Process optimization is an ongoing journey. Sometimes it means investing in a new filtration system to keep solids from forming during crystallization. Other times, it means engineering a better drying chamber or tweaking a purity specification in response to a failed pilot run. Production chemists and operators alike keep notes, take measurements, and draw conclusions that get tested and iterated upon in the next batch. Nothing beats hands-on experience and persistence.

    Continuous Investment in Equipment and People

    Machines matter, but well-trained staff matter more. Operators and QC chemists build their skills over decades; turnover grinds learning to a halt. We invest in real continuing education, keeping all teams up to date with current analytical practices as well as changes in regulation and product demand. Any new piece of capital equipment—a better analytical balance, a new chromatography column, custom-built reactors—goes through thorough shakedowns with both R&D and operations before integral use. People talk, routines improve, and the new knowledge lands in the official protocols only after its value is proven.

    We see the payoffs in fewer out-of-spec batches, less waste, and faster turnaround on tight-deadline projects. Operators who know the quirks of our 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione process spot deviations early, adjust parameters with confidence, and keep waste and downtime in check.

    Collaboration for Future Innovation

    The best product advances have always sprung from direct, honest feedback and open exchanges with scientists—both in our lab and in our customers’ plants and research groups. We take pride in ‘being in the room’ when projects reach a dead end due to material issues, because that’s when meaningful change can happen. Successful syntheses, process tweaks, and entirely new chemical innovations have emerged from frank conversations and shared goals.

    We welcome joint development projects and custom batch requests, and regularly host site visits for companies interested in seeing our production firsthand. Experience has shown that pulling back the curtain benefits both supplier and user. Every visitor—chemist, engineer, or executive—leaves with a clearer sense of how meticulous attention at each production stage leads to better outcomes and smoother research downstream.

    Being a dedicated chemical manufacturer isn’t about crossing items off the order book. It means showing up—day after day—solving tough problems, adapting to new challenges, and turning raw experience into real value for those who work at the boundary of science and technology. Our role is to make sure 5H-Cyclohepta[b]pyridine-7,8-dihydro-5,9(6H)-dione arrives ready to power breakthroughs, not create new headaches.