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Ethyl Oxazole-4-Carboxylate

    • Product Name Ethyl Oxazole-4-Carboxylate
    • Alias Ethyl 4-oxazolecarboxylate
    • Einecs 68409-36-5
    • 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

    249949

    Product Name Ethyl Oxazole-4-Carboxylate
    Cas Number 144053-11-6
    Molecular Formula C6H7NO3
    Molecular Weight 141.13 g/mol
    Appearance White to off-white solid
    Boiling Point No data available (decomposes)
    Melting Point 61-63°C
    Density No data available
    Solubility Soluble in organic solvents such as ethanol and DMSO
    Purity Typically ≥98%
    Chemical Class Oxazole derivative
    Smiles CCOC(=O)c1ccon1
    Inchi InChI=1S/C6H7NO3/c1-2-9-6(8)5-3-4-10-7-5/h3-4H,2H2,1H3

    As an accredited Ethyl Oxazole-4-Carboxylate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Ethyl Oxazole-4-Carboxylate is supplied in a 25g amber glass bottle, sealed, with chemical labeling and safety information displayed.
    Shipping Ethyl Oxazole-4-Carboxylate is shipped in sealed, chemically resistant containers, compliant with international transport regulations. The packaging ensures protection from moisture, light, and physical damage. Appropriate labeling and documentation accompany shipments, and handling follows hazardous chemical safety guidelines. Temperature control may be applied to preserve chemical stability during transit.
    Storage Ethyl Oxazole-4-Carboxylate should be stored in a tightly sealed container, in a cool, dry, well-ventilated area away from sources of ignition and incompatible substances such as strong oxidizers. Protect from moisture and direct sunlight. Store under inert gas, such as nitrogen, if indicated by the manufacturer. Always ensure proper labeling and access to safety data sheets (SDS) in the storage area.
    Application of Ethyl Oxazole-4-Carboxylate

    Applications of Ethyl Oxazole-4-Carboxylate in Industrial Manufacturing

    Ethyl Oxazole-4-Carboxylate stands as a specialized intermediate recognized for its concrete roles in the synthesis of advanced pharmaceuticals and agrochemicals. Our manufacturing expertise ensures a consistent supply chain for high-volume producers requiring strict control over process parameters and regulatory compliance. The following industrial application scenarios reflect established end-uses, precise formulation guidance, and workflow integration for downstream sectors.

    1. Active Pharmaceutical Ingredient (API) Intermediate for Cephalosporin Antibiotics

    Large-scale pharmaceutical manufacturers employ Ethyl Oxazole-4-Carboxylate as a core structure-building block during the multi-step synthesis of select cephalosporin antibiotics, such as cefotetan and related compounds. This intermediate enters targeted steps involving oxazole ring construction, demanding reliable reactivity and purity to comply with stringent QC checkpoints. Process engineers optimize charge ratios according to the exact API structural requirements and batch scale.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for Active Pharmaceutical Ingredients)
    • European Pharmacopoeia (current edition, relevant monographs)
    • United States Pharmacopeia (USP) General Chapters for intermediates where applicable
    • FDA cGMP (21 CFR Parts 210 & 211)

    Typical usage ratio

    • 1–1.3 molar equivalents, adjusted based on target cephalosporin scaffold yield and stepwise purity monitoring in kilo-lab to commercial-scale reactors

    Downstream process integration

    • Charged directly to oxazole ring-forming condensation reactors after precursor functionalization and pre-purification
    • Used in heated batch or continuous reactor lines under closely monitored pH and temperature profiles
    • Purity validated by HPLC and NMR prior to downstream amide or ester coupling stages

    Final product types

    • Cephalosporin active pharmaceutical ingredients (e.g., cefotetan sodium, cefmetazole)
    • Sterile antibiotic injectable formulations
    • Oral and parenteral antibiotic dosage forms

    2. Agrochemical Intermediate for Herbicide Synthesis

    Producers of high-selectivity herbicides integrate Ethyl Oxazole-4-Carboxylate into critical early-stage coupling reactions for nitrogen-heterocycle functional group assembly. Batch engineers customize the molar input according to the downstream substitution pattern, targeting efficient conversion rates and compliance with safety evaluation protocols established by agrochemical regulatory bodies.

    Industry compliance standards

    • FAO/WHO Specification for Plant Protection Products
    • REACH Regulation (EC) No 1907/2006
    • ISO 9001:2015-certified production systems
    • Internal stewardship protocols aligned with OECD Test Guidelines for chemical safety

    Typical usage ratio

    • 0.8–1.1 molar equivalents per targeted active functional group, modulated by the conversion yield and reactivity of associated aromatic precursors

    Downstream process integration

    • Added to scale-up reactors during formation of oxazole-based herbicidal scaffolds
    • Reactor charge timing correlates with process safety measures for exothermic reactions
    • Pilot batches assess conversion and residual levels before technical-grade purification steps

    Final product types

    • Systemic pre-emergence and post-emergence herbicide technical concentrates
    • Granular and suspension herbicide formulations for crop protection
    • Bulk intermediates for field trial and registration studies

    3. Pharmaceutical Research Intermediate in Heterocycle Compound Libraries

    Leading pharmaceutical R&D laboratories routinely select Ethyl Oxazole-4-Carboxylate as a starting substrate for generating structurally diverse heterocyclic compound libraries used in medicinal chemistry screening. Chemoinformatics-driven library synthesis dictates adaptive input ratios and rapid parallel processing, permitting researchers to prepare large panels of functionalized analogues for early efficacy or ADME assessment.

    Industry compliance standards

    • OECD Principles of Good Laboratory Practice (GLP)
    • Corporate compound management and traceability systems
    • Applicable institutional biosafety regulations for compound handling
    • ISO 17025 (Testing and Calibration Laboratories)

    Typical usage ratio

    • 0.5–2.0 molar equivalents, varied reaction-by-reaction to accommodate high-throughput synthesis, combinatorial chemistry, and multi-step cascade reactions

    Downstream process integration

    • Delivered as a primary nucleophile or electrophile for parallel synthetic block assembly
    • Dosed via automated liquid handlers or fed-batch techniques in microtiter plate-based or vial-based library workflows
    • Intermediates sampled by LC-MS and NMR for structural confirmation and scalability evaluation

    Final product types

    • Small-molecule heterocycle screening libraries
    • Lead compound prototypes for new chemical entity (NCE) pipelines
    • Reference materials for in vitro biochemical assays

    4. Fine Chemical Synthesis for Specialty Dyes and Fluorescent Probes

    Manufacturers of specialty analytical dyes and advanced fluorescent probes incorporate Ethyl Oxazole-4-Carboxylate for constructing specific oxazole-moiety-containing chromophores. Analytical chemists establish precise input loads targeting efficient nucleophilic substitutions and maximized spectral properties, with process controls adjusted for batch purity and downstream photophysical performance.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management Systems for chemical manufacturing)
    • RoHS Directive (2011/65/EU) for applicable analytical dye products
    • REACH compliance for registration and safe handling
    • Internal specifications for spectral and purity benchmarks

    Typical usage ratio

    • 0.9–1.2 molar equivalents, adjusted based on target chromophore efficiency and side reaction minimization

    Downstream process integration

    • Introduced at early condensation or substitution stages for oxazole ring attachment
    • Monitored by in-process UV-Vis and HPLC analysis to validate color yield and photostability
    • Batch records document all solubilization, filtration, and crystallization steps for regulatory traceability

    Final product types

    • Specialty fluorescent dyes for laboratory and industrial analytics
    • Optical brighteners and tracers used in QA/QC processes
    • Fluorescent tagging reagents for molecular biology applications
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    Certification & Compliance
    More Introduction

    Ethyl Oxazole-4-Carboxylate: Crafted for Reliable Synthesis

    Understanding Ethyl Oxazole-4-Carboxylate

    At our plant, we turn out Ethyl Oxazole-4-Carboxylate with a keen focus on consistency and real-world usability. This compound carries the chemical backbone to serve as a bridge-builder in many synthesis routes across pharmaceutical and fine chemical production. Its structure—anchored by the oxazole ring and an ethyl carboxylate group—lends itself to reactivity with a predictable profile. Over the years, we have recognized its value not just from a chemical standpoint, but also in the way chemists use it to unlock new possibilities in molecular design.

    With the demand from process development teams and labs, the need for materials that react with precision takes center stage. The requirements come from real practical barriers: smoother conversions, higher selectivity, and manageable purification steps. Chemistry isn’t just science on paper—it’s what flows through the equipment and shows up on yield reports down the line. Many of our team have worked at benches where a failed reaction means a lost week and thousands in costs. In this context, product purity isn’t a checkbox: it lets research and scale-up run with fewer headaches.

    Product Model and Specifications: Genuine Benefits

    Through repeated production runs, we have refined our Ethyl Oxazole-4-Carboxylate output to a standard that stands up to synthetic challenges. Typical specifications from our most recent lots show a purity above 98% by HPLC, low residual solvents, and minimal colored impurities. These qualities aren’t accident—they come from hands-on monitoring and calibrated methods in every batch. We keep water content tightly controlled, as traces beyond specification tend to complicate downstream processing, especially in moisture-sensitive reactions.

    Most vendors offer this intermediate as a colorless to pale yellow liquid, with a mild ester odor easy to recognize in the lab. We supply it in volumes sized for both discovery projects and full production—to minimize transfer losses and storage time, which we have found can impact sensitive chemistry. By using inert gas padding and high-integrity packaging, we cut down on degradation. Our workers see firsthand how careless handling can spoil a batch before it even enters a reactor, so our workflow pays extra attention to this basic but critical step.

    Usage: Trusted in Real Synthesis

    On the shop floor, the talk always returns to performance in the field. Our Ethyl Oxazole-4-Carboxylate finds its place most often in heterocyclic chemistry. Medicinal chemists look for this fragment to assemble biologically active heterocycles, including oxazole- and pyrazole-based targets. Companies working on API routes use it to build core scaffolds in antifungal, antiviral, or anti-inflammatory drug candidates—not because of a trend, but due to how reliably it couples with amines, aryl halides, or alkylating agents under mild conditions.

    Process chemists prefer to avoid exotic reagents and pressure reactions whenever possible. With this ester, ligation steps—amide bond formations, acylations, and ring closures—require just straightforward conditions. This means less troubleshooting, cleaner work-ups, and fewer surprises as projects move from bench to plant. When you see a batch move through each synthetic step without stalling out, that’s a deeper comfort than any product flier can promise. The feedback from users in R&D lines up with what we see in our plant: plenty of control in reactivity, no stubborn side products, and a shelf profile that matches the declared specs.

    The Differences that Matter: Ethyl Oxazole-4-Carboxylate vs. the Field

    Across the landscape of heterocyclic intermediates, not every product brings the same reliability. Over the years, synthetic chemists often swap ethyl esters for methyl or tert-butyl analogues, looking for a softer touch or a faster cleavage. Our Ethyl Oxazole-4-Carboxylate strikes a middle ground: it carries more stability toward acid and base than methyl versions and avoids the bulky character of tert-butyl groups, which can slow reactivity or block critical sites.

    We see reactions climb to completion with less base hydrolysis—and less by-product formation—than with some other oxazole-carboxylates. This means less column work and fewer purification passes, which in turn brings down solvent costs and man-hours. Researchers who want to minimize batch-to-batch variability often stick with the ethyl form for exactly this reason. After hundreds of production runs, these differences are anything but theoretical: they translate to more predictable outcomes and less last-minute troubleshooting.

    It’s one thing to rely on a molecule in discovery workflows; it’s another to scale up to pilot or commercial settings. Some intermediates behave in small flasks and turn erratic in 100-liter reactors. With Ethyl Oxazole-4-Carboxylate produced in our facility, feedback from contract manufacturers and internal teams pinpoints its scalability. Reactions optimized for the bench don’t fall apart at higher scales. The physical properties—manageable viscosity, clear phase separation—make bulk blending and addition straightforward, even when handling hundreds of kilos at a time.

    Addressing the Reality: Cost Control, Regulatory Pressure, and Sourcing

    Lab talk often circles back to pricing and regulatory compliance. Not all sources of Ethyl Oxazole-4-Carboxylate deliver a traceable supply chain. Our processes remain anchored in full batch documentation, with Certificate of Analysis, impurity tracking, and clear lot history. Regulatory teams care about what goes in and what comes out, not for paperwork’s sake but because cross-contamination or hidden by-products can spell disaster for regulatory filings or batch release. It’s not unusual for our QC team to receive questions from partners sourcing upstream for filings in new markets. Our internal experience matches what auditors expect: solid data, transparent documentation, and no surprises when samples go for external analysis.

    Material costs have climbed, with shortages sometimes affecting even ordinary intermediates. Through long partnerships with raw material suppliers, we have managed to hold steady on both price and availability, even when market volatility plays havoc. Inventory teams work closely with logistics to keep enough on hand so customer projects don’t stall out for lack of starting material. If a plant switches on in the middle of a tight market, we pull from our on-site stock rather than waiting on uncertain shipments. This approach isn’t glamorous, but years of supply chain headaches have taught us to plan on the boring details, not temporary bargains from unknown brokers.

    Feedback from the Shop Floor and Chemistry Benches

    User experiences tell the clearest story. Technicians bring up how this intermediate dissolves cleanly into both polar and nonpolar solvents—no gummy residues, no phase weirdness, just a predictable liquid phase. For custom synthesis, the temperature window before decomposition gives process chemists breathing room to optimize conditions. Our colleagues at partner sites describe less down-time lost to resin fouling and filter blockages because the produced crystals stay free-flowing.

    Comments from long-term collaborators often mention less downtime lost to troubleshooting. All the automation and process monitoring in the world doesn't make up for a sticky intermediate or unexpected emulsions. With the protocols we follow here, we haven't had to field emergency calls from customers whose process stalls due to inconsistent input quality.

    Sustainability and Worker Safety

    The synthetic chemistry sector faces the reality that even niche compounds appear in environmental audits. We invested early in emission capture and solvent recycling for this intermediate’s route. Since switching over, solvent loss rates dropped, and reports to local authorities become routine paperwork—never a scramble to explain off-spec emissions. All waste streams get documented and tracked from the shop floor to final treatment. Operators train continuously in handling procedures and spill response; for us, clean records aren’t compliance for compliance’s sake, they’re the mark of a site where people care about their workplace.

    Recently, we moved away from older, higher-toxicity reagents in the final steps, after receiving input from operators who handle the material daily. The feedback from health and safety reviews keeps us honest—real people work in those rooms, and safety considerations go hand in hand with reliability. Whether the compound is produced in a 10-liter glass vessel or a 1000-liter reactor, the plant runs on the same set of protocols and protections. For both investigator and plant worker, predictability matters: from handling properties to odor, to flash point and vapor hazards. Company culture prizes straight talk—ineffective PPE or unclear batch labels cost more than compliance fines. This is a working shop, not a showroom.

    Continuous Improvement: Beyond Specifications

    Quality doesn’t start with a polished specification sheet—it starts with process design, vendor selection, and batch monitoring. Every few months, process engineers review performance yield, by-product signatures, and production bottlenecks. What seems like a tiny deviation in an HPLC trace one year may become a real process hiccup once a batch scales up. We regularly adjust drying and distillation parameters based on real-world feedback, both internal and from larger contract manufacturers. For our operation, staying “in spec” means never assuming the process is fixed permanently.

    In our experience, end users detect subtle differences between lots—enough to derail a validation or force a late-stage process tweak. Early on, we underestimated the degree to which trace impurities impact downstream chemistry. That lesson came at the cost of an interrupted API project and significant rework. Since then, batch-to-batch reproducibility became central to our mission, not just because regulatory auditors ask, but because development chemists depend on it for late-stage candidate selection.

    Knowledge Sharing and Industry Collaboration

    We keep open lines with researchers, contract manufacturers, and regulatory consultants. The best improvements in our production line have come from real questions brought during tech transfer, root-cause investigations, and even customer complaints. Sometimes a seemingly small impurity or a shift in melting point prompts a deeper dive that uncovers an emerging process fault. Instead of hiding behind closed doors, our technical team keeps engaged with outside labs and partner facilities. Regular process audits and shared run data keep each batch aligned with both in-house standards and global industry benchmarks.

    We also take part in industry roundtables and regulatory consultations. The exposure to evolving compliance standards and new analytical tools sharpens both our documentation and our ability to anticipate changes that affect customer products. Being plugged into the wider industry helps our own team spot trends and adopt best practices before an issue becomes a crisis.

    The Choice of Ethyl Oxazole-4-Carboxylate in Modern Synthesis

    Selecting intermediates isn’t just about cost or catalog number. We see day in and day out that project timelines, regulatory pathways, and even patent strategies depend on reliability in supply and chemical compatibility. Switching a key intermediate in later stages burns up time and risk capital, so developmental teams search for sources with both performance data and transparent process documentation.

    For applications requiring heterocycle formation, controlled functionalization, or late-stage diversification, Ethyl Oxazole-4-Carboxylate features the versatility to play multiple roles. We have seen it used in exploratory medicinal chemistry, polymer research, and even as a linker in conjugation chemistry. Its ethyl ester group forms amide bonds without harsh conditions, supports selective hydrolysis, and allows protection strategies that dovetail with modern multi-step synthesis. Medical chemistry teams running parallel synthesis campaigns report cleaner reaction profiles and easier isolation—a real asset when timelines tighten and resources stay stretched.

    Through hundreds of real-life batch records, we have learned that a dependable intermediate is more than just a line item on a spreadsheet. It anchors process consistency, saves on waste, avoids last-minute troubleshooting, and gives chemical teams room to innovate. With Ethyl Oxazole-4-Carboxylate delivered from our lines, our partners keep their focus on what matters: moving projects forward from lab to launch, without the headaches caused by inconsistent inputs.

    Real-Life Insights: How We Keep Pace

    What helps us stay aligned with customer needs isn’t a flashy new process or a temporary improvement. It’s our ability to build long-term relationships—those based on honest data, prompt resolution of issues, and proactive transparency. We keep track of product returns, near-miss incidents, and customer complaints in a central log. Every entry prompts a review and, where needed, a real process adjustment. In one instance, feedback about trace water leading to side reactions on scale led to revamping our drying step parameters. Those tweaks paid off in tighter water specs, fewer rejected lots, and better downstream yields for a key partner.

    Instead of pressing for sales at any cost, we track the actual, measurable quality details that affect real-world chemistry. We prioritize response time and supply continuity, knowing that any interruption halts chemists’ work across several countries. In past years, a sudden surge in demand for this intermediate caught more than one supplier off guard. By tracking forward orders, scaling up in time, and keeping our lines flexible, we weathered those spikes without passing along price shocks or shortchanging partners on delivery windows.

    A Product for Today’s Labs and Tomorrow’s Plants

    For those in R&D, contract synthesis, or commercial manufacture, the goal is the same: move new molecules from paper to real product efficiently, safely, and with full regulatory support. Our Ethyl Oxazole-4-Carboxylate delivers on the needs of today’s chemistry—meeting reactivity standards, handling safety, and audit-ready documentation. With each batch packed and shipped, there’s a direct line from our team to the hands of the next chemist or engineer. If a project calls for a tailored process or special shipment, our technical group coordinates directly so no detail falls through the cracks.

    At the end of the day, every kilogram that leaves our facility carries the real experience of those who made it. From process chemists to quality analysts and line operators, everyone has a stake in getting the details right. For new partner projects, we make sure technology transfer includes actual process run notes and lessons learned—not just a specification sheet. This open book approach has kept us moving forward, batch after batch, as market needs and compliance standards evolve.

    The world of synthetic chemistry doesn’t slow down, and neither do we. Through practical know-how, direct feedback, and relentless improvement, our Ethyl Oxazole-4-Carboxylate stands as a trusted component in countless research and commercial projects. For teams building the next generation of pharmaceuticals, fine chemicals, or materials, our commitment to real-world readiness makes all the difference.