1-Phenyl-3-Carboethoxy-5-Pyrazolone

    • Product Name: 1-Phenyl-3-Carboethoxy-5-Pyrazolone
    • Chemical Name (IUPAC): ethyl 1-phenyl-5-oxo-2,4-dihydro-1H-pyrazole-3-carboxylate
    • CAS No.: 89-25-8
    • Chemical Formula: C12H12N2O3
    • Form/Physical State: Crystalline Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@boxa-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    115670

    Chemical Name 1-Phenyl-3-Carboethoxy-5-Pyrazolone
    Molecular Formula C12H12N2O3
    Molecular Weight 232.24 g/mol
    Appearance White to off-white crystalline powder
    Melting Point 128-132°C
    Solubility Slightly soluble in water, soluble in organic solvents
    Cas Number 89-25-8
    Boiling Point Decomposes before boiling
    Density 1.28 g/cm³ (approximate)
    Structure Pyrazolone ring with phenyl group at 1-position and carboethoxy group at 3-position
    Synonyms Ethyl 1-phenyl-5-pyrazolone-3-carboxylate
    Storage Conditions Keep in a cool, dry place and tightly closed container

    As an accredited 1-Phenyl-3-Carboethoxy-5-Pyrazolone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 500g of 1-Phenyl-3-Carboethoxy-5-Pyrazolone is supplied in a sealed amber glass bottle with tamper-evident cap and labeling.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for 1-Phenyl-3-Carboethoxy-5-Pyrazolone: Securely packed in drums or bags, maximizing capacity while ensuring safety and compliance.
    Shipping Shipping for **1-Phenyl-3-Carboethoxy-5-Pyrazolone** requires secure, hermetically sealed containers to protect against moisture and contamination. The chemical should be packaged according to local and international regulations, labeled appropriately, and shipped with a safety data sheet. Avoid direct sunlight and extreme temperatures to preserve stability during transit.
    Storage 1-Phenyl-3-Carboethoxy-5-Pyrazolone should be stored in a tightly sealed container, protected from light and moisture. Keep it in a cool, dry, well-ventilated area, away from incompatible substances such as strong oxidizers and acids. Store at room temperature or as otherwise specified by the manufacturer. Ensure proper labeling and adhere to relevant safety regulations when handling and storing the compound.
    Shelf Life 1-Phenyl-3-Carboethoxy-5-Pyrazolone is stable under cool, dry conditions; shelf life typically exceeds 2 years if unopened and properly stored.
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    Certification & Compliance
    More Introduction

    1-Phenyl-3-Carboethoxy-5-Pyrazolone: A Closer Look from the Manufacturer’s Perspective

    Shaping Possibilities with 1-Phenyl-3-Carboethoxy-5-Pyrazolone

    Our journey with 1-Phenyl-3-Carboethoxy-5-Pyrazolone started years ago in response to the persistent demand for reliability within pharmaceutical and chemical synthesis. There are few specialty compounds that have consistently demonstrated such flexibility in applications. Over the years, we’ve watched not just the science but also the stories around this molecule, as laboratory teams and process engineers have tried to push boundaries in their own fields. Manufacturing it brings unique challenges and rewards because its properties draw attention from researchers and producers who expect precision and repeatability in every batch.

    Reflecting on Our Product’s Model and Specifications

    The substance itself appears as an off-white to pale yellow crystalline powder—its identity unmistakable in our production rooms. Chemically, C12H12N2O3 defines its backbone, with a molecular weight usually registered at 232.24 g/mol. Every lot that leaves our facility must meet the stringent criteria established through years of feedback from actual end-users who rely on purity and consistency. Typical assays often reach above 99%, and residual solvents fall well below accepted thresholds. We handle solid-state stability and storage concerns with daily diligence, choosing container liners and transport methods that limit exposure to moisture and extreme temperatures, because even minor fluctuations in handling can result in clumped material or subtle changes to physical characteristics.

    We learned early on that many laboratories use 1-Phenyl-3-Carboethoxy-5-Pyrazolone as a robust intermediate for further synthesis, appreciating its resistance to common degradation pathways. The meticulous process control from raw material preparation to final drying steps means fewer problems downstream for chemists who need dependable reaction performance without surprise contaminants or fluctuating melting points. Over time, our technical reports reflected steady advances—lowering impurity content, lengthening shelf life, and ensuring that the off-white color stays within a tight, expected range, with every kilogram traceable back through our production logs.

    How This Pyrazolone Stands Apart

    What sets 1-Phenyl-3-Carboethoxy-5-Pyrazolone apart isn’t just chemistry on paper. Colleagues in research value consistency batch after batch, and that has shaped our priorities. Most pyrazolones in the market serve as building blocks, but this specific derivative adds the ethoxycarbonyl group at the 3-position, opening doors for API synthesis and dye development that standard pyrazolones can’t handle as effectively. The additional functionality offers new reactivity in condensation reactions, yet the core phenyl structure retains compatibility with established protocols in coupling and metal chelation studies.

    We have observed that competitors sometimes trade off speed in their dry down steps for purity, leading to suboptimal results in bench tests. Our technicians choose slower, temperature-controlled drying to maximize purity and preserve flow properties that users value in larger scale syntheses. Efforts in real-world trials have repeatedly shown that formulations made with our carefully dried product present fewer agglomeration issues, especially in automated dosing systems. This level of attention proves more valuable to partners in high-stakes pharmaceutical research and agrochemical discovery, where mistakes or batch variability can derail months of work.

    Supporting Diverse Applications Through Experience

    In pharmaceutical research, our product frequently goes into the early stages of active substance development. We receive regular questions about its behavior under pressure, its solvating tendencies, and its shelf stability. Often, researchers ask for small modifications—sometimes a tighter particle size range, sometimes new documentation supporting low bioburden—and our in-house teams work directly with them. That hands-on partnership has led us to implement screens for trace metals and organic by-products that hadn’t been common practice a decade ago.

    We watched one development team discover that a certain impurity level, seemingly insignificant, disproportionately impaired the selectivity of a key synthetic step. Our technical team worked backwards through our logs, instrument calibration, and packaging protocols. Weeks later, we pinpointed and eliminated the source, not just correcting a batch but ultimately improving our entire production process. Examples like this have convinced us that direct contact with real users supports breakthroughs more than anything else.

    In dye chemistry, 1-Phenyl-3-Carboethoxy-5-Pyrazolone plays a distinct role as a chelating agent. Metal complex dyes benefit from its reactivity and stability in the face of repeated high-temperature cycles. End-users in textile and printing work expect reliability across batches, particularly in environments sensitive to minute changes in reagent quality. Our product’s consistency gives end-users a foundation to create reproducible results, which often shows up in feedback—photos of brightly colored fabrics and sharp ink lines flow back to our offices as proof of robust chemistry, not just numbers on a certificate of analysis.

    Why Manufacturing Methods Matter

    From a manufacturer’s vantage point, producing strongly characterized pyrazolone derivatives means more than mixing reagents and running a standard purification. Many small-batch suppliers in the market aim for short lead times and cut corners that professionals quickly notice, especially during scale-up or regulatory audits. We put our focus on upstream quality—scouting reliable sources for aniline, refining our handling of ethyl acetoacetate, fine-tuning recrystallization protocols, and auditing every reflux and cooling cycle before we release anything to warehousing.

    Batch-to-batch reproducibility frequently depends on choices made during earlier steps. Every time we needed to troubleshoot a color shift or a drop in assay, we found that regular, documented calibration of analytical equipment makes a difference. Spectral data and retention times created in our QC laboratory sit right next to historical batch records. This habit means any customer complaint or odd finding can be unpacked quickly and accurately, saving time for researchers and giving us evidence-driven ammunition to keep our production on track.

    We also embrace continuous improvement as an ongoing process. After repeated requests from customers involved in regulated environments, we designed new, more rugged packaging to maintain integrity during air and sea transport, added UV-protection when needed, and supplied extended stability data verified in real-time as well as accelerated runs. These adjustments weren't theoretical—they were the direct result of feedback from repeat buyers who saw value in our willingness to invest in the boring but critical details.

    End-User Experience Directs Evolution

    End-users helped guide the development of our current manufacturing approach. A team from a major pharmaceutical lab once found that minor particle size differences led to clumping in their reactors, affecting yield and purity. Conversations like these prompted us to implement particle analysis using laser diffraction, making it possible to tweak milling conditions rather than relying solely on sieving. As a result, our shipments now show greater uniformity in flow and behavior, reducing the incidence of clogs in automated dispensing lines. This kind of problem-solving makes a concrete difference to those running multi-kilo syntheses under strict regulatory scrutiny.

    Another group working in analytical chemistry noticed variability in their calibration curves linked to unseen by-products. When they reached out, our team analyzed archived reference samples and production logs to trace these deviations. It turned out that switching a minor supplier of a reagent introduced fluctuating trace impurities. Tracing error at this level required deep recordkeeping and a collaborative spirit. Once the problem showed itself, we installed new supplier-vetting steps throughout the procurement process. The impact could be measured in repeat orders and fewer anecdotes about “mystery problems” originating with raw materials.

    Our regular collaboration with customers stretches from industry’s biggest names to emerging research startups. With each partnership comes new questions and learning. Sometimes this means updating policies for documentation and testing, implementing new trace-level analytics, or simply listening to feedback about packaging size. We see the result every time a client’s project timeline picks up pace or their regulatory compliance headaches diminish because their starting material performs as expected, batch after batch.

    Industry Trends and How We Adapt

    Growing regulatory and quality requirements have shaped the production and distribution of specialty pyrazolones. In recent years, customers in the pharmaceutical sector asked for expanded documentation, including detailed impurity profiles, elemental analysis, and evidence of reproducibility over multiple campaigns. These requests are driven by increasingly strict global regulations and audits, with authorities looking not only for product reliability but for traceability all the way back to the sourcing of base chemicals.

    We embraced these trends by building traceability into our data management practices. Every production step now gets logged, from intermediate inspections to final product release, giving our quality assurance department rapid access to all relevant records. We continue to push for process transparency and open dialogue with regulatory bodies and clients. This openness helps reduce friction, especially during new vendor qualification or site visits, and gives us a reputation as a reliable partner rather than a faceless bulk supplier.

    Market volatility can pressure manufacturers to cut corners or chase the lowest available input cost, but experience has shown us the value of staying steady. Our core staff has weathered chemical shortages, price spikes, and changing international shipping conditions by doubling down on inventory control and early procurement for key precursors. That preparation means customers consistently receive the material they expect, without surprise substitutions or downgraded lots. Sticking to our standards, even in the face of shifting markets, has protected both our business and our clients’ research.

    Comparing to Other Specialty Chemicals

    We often talk with clients who test multiple pyrazolones in parallel, hoping to find subtle advantages for their workflows. The psycho-chemical properties of 1-Phenyl-3-Carboethoxy-5-Pyrazolone, with both its phenyl and carboethoxy groups, lend unique solubility and stability features that classic pyrazolones or simple ring variants can’t match. For example, its additional functionalization improves handling during scale-up and opens avenues for further derivatization—making it especially attractive for custom synthesis and drug development.

    Competitor products sometimes sacrifice narrow impurity controls or traceability in pursuit of bulk pricing. End-users in regulated fields know to watch for shifting lot characteristics that escape low-cost suppliers. Our approach keeps the long-term reliability in sharp focus, prioritizing analytical transparency over minimal processing costs. End-users who try to substitute similar pyrazolones, perhaps lured by appearance or basic chemical similarity, have reported downstream synthetic failures or inconsistent analytical reads. Our documented workflow, from raw material to finished batch, gives our users a road map for success rather than headaches.

    Solutions to Production and Use Challenges

    Production of 1-Phenyl-3-Carboethoxy-5-Pyrazolone presents specific challenges—managing moisture levels, preventing contamination by closely related analogs, and delivering reliable physical characteristics at the end-user site. Instead of aiming for quick fixes, we invested in environmental controls, better drying infrastructure, and staff training on GMP-aware processes. These choices sometimes slowed throughput but paid off by dropping complaint rates and strengthening client trust.

    Research teams using our product often encounter scaling hurdles when moving from bench to kilogram quantities. Early involvement with our technical staff helps smooth these transitions, as our application scientists offer insights into solubility, reaction optimization, and handling under production conditions. Teams who leverage our expertise gain troubleshooting support that reaches from reaction flask to final drum. Whether the need is more robust written documentation, or technical discussions with experts who’ve “been there” with similar compounds, we support these collaborations out of respect for the work being done at the innovation frontier.

    Responsible Manufacturing for the Future

    As environmental and sustainability considerations gain prominence, we look at each process not just for efficiency, but for long-term safety and waste minimization. Years ago, most manufacturers relied on open handling and basic effluent management. Now, solvent recycling and air monitoring are part of the standard operating procedure. Efforts to reduce waste streams and invest in closed system handling reflect the pressure—and the responsibility—we feel being upstream in the chemical supply chain.

    The requests coming in for green chemistry documentation, lifecycle analysis, and eco-friendly packaging have shifted the way our teams think about production. Stepwise changes, like switching to low-impact solvents and investing in reusable pallets, don’t always capture headlines, but their cumulative effect matters. Leadership recognizes that maintaining trust with partners—especially as legislation tightens—demands actions that go beyond compliance and reflect a purposeful intent to do better.

    Conclusions Drawn from the Workshop Floor

    Making 1-Phenyl-3-Carboethoxy-5-Pyrazolone, day in and day out, reminds us that chemistry is more than a reaction in a beaker. The feedback loop between producer and user builds continuous improvement and problem-solving into the daily routine. Solutions to issues like lot-to-lot consistency, impurity control, or optimum drying aren’t academic—they’re the difference between wasted time and productive research for the scientists downstream.

    Watching this compound’s role in drug discovery, dye chemistry, and analytical applications over decades has given us an appreciation for the detailed, attentive approach required to stay trustworthy. As interest in advanced chemical building blocks grows, so do the expectations from buyers and regulators alike. Real-world feedback, direct response, and openness to improvement keep us moving. For those searching for a specialty pyrazolone with predictable performance, knowing where and how it was made isn’t a bureaucratic detail. It’s the foundation of choosing a material that delivers, batch after batch, with a manufacturing team firmly committed to supporting the next wave of chemical innovation.