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3-Oxocyclopentanecarboxylic Acid

    • Product Name 3-Oxocyclopentanecarboxylic Acid
    • Alias 3-Oxocyclopentane-1-carboxylic acid
    • Einecs 207-804-1
    • 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

    303845

    Product Name 3-Oxocyclopentanecarboxylic Acid
    Cas Number 3635-78-3
    Molecular Formula C6H8O3
    Molecular Weight 128.13 g/mol
    Appearance White to off-white solid
    Melting Point 115-118°C
    Solubility Soluble in water and organic solvents
    Purity Typically ≥98%
    Smiles C1CC(=O)CC1C(=O)O
    Inchi InChI=1S/C6H8O3/c7-5-2-1-4(3-5)6(8)9/h4H,1-3H2,(H,8,9)
    Storage Temperature Store at 2-8°C
    Synonyms 3-Oxocyclopentane-1-carboxylic acid

    As an accredited 3-Oxocyclopentanecarboxylic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 250g of 3-Oxocyclopentanecarboxylic Acid is supplied in a sealed amber glass bottle with a tamper-evident cap and hazard labeling.
    Shipping 3-Oxocyclopentanecarboxylic Acid is shipped in tightly sealed containers, protected from moisture and incompatible substances. It is typically packed according to chemical safety regulations, labeled with hazard warnings, and transported under controlled temperature conditions. Proper documentation, including safety data sheets, accompanies the shipment to ensure safe handling and regulatory compliance.
    Storage Store 3-Oxocyclopentanecarboxylic Acid in a tightly sealed container under a dry, inert atmosphere, preferably in a cool, well-ventilated area away from moisture, heat, and direct sunlight. Segregate from strong oxidizing agents and bases. Ensure proper labeling and avoid prolonged exposure to air, as the compound may be sensitive to environmental conditions. Follow applicable safety regulations for chemical storage.
    Application of 3-Oxocyclopentanecarboxylic Acid

    Applications of 3-Oxocyclopentanecarboxylic Acid in Industrial Manufacturing

    As a direct producer of 3-Oxocyclopentanecarboxylic Acid, we supply this raw material for specialized applications where its five-membered cyclic ketoacid structure brings measurable benefits in key synthetic and formulation processes. Our long-term quality commitment focuses on end-to-end control for established downstream segments where this intermediate adds functional value, supporting customer manufacturing operations with predictable results.

    1. API Synthesis for β-Lactam Antibiotics

    Pharmaceutical firms use 3-Oxocyclopentanecarboxylic Acid in the early-stage synthesis of certain β-lactam intermediates, taking advantage of its reactivity for ring construction under controlled, GMP-compliant conditions. The ketoacid is introduced during the first or second chemical transformation when constructing core scaffold molecules for further derivatization. Precise raw material quality and traceability are critical due to final API regulatory requirements.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP-NF or relevant national pharmacopoeias where applicable
    • 21 CFR Part 211 (FDA cGMP regulations for drugs)
    • EU GMP Directive 2001/83/EC and EudraLex Volume 4

    Typical usage ratio

    • Used at 0.5–3.5 molar equivalents per step, based on downstream intermediate yield targets; adjusted for reaction path and scale-up batch characteristics.

    Downstream process integration

    • Raw material enters via solvent dissolution at low temperature in the initial heterocycle formation stage.
    • Advance to condensation, protection, or cyclization, depending on the β-lactam analog.
    • Subjected to vacuum distillation and multi-step purification before onward derivatization.

    Final product types

    • Cephalosporin antibiotic APIs (e.g., cefalotin, cefadroxil precursors)
    • Other β-lactam-based drug intermediates
    • Specialty small-molecule pharmaceutical building blocks

    2. Agrochemical Intermediate Manufacturing

    Agrochemical producers rely on this cyclopentanone derivative as a key structural precursor when synthesizing patented and off-patent herbicides and insecticides. Its cyclic ketone-carboxylic motif enables efficient construction of environmentally persistent actives. The acid is selectively functionalized under controlled conditions, with in-process monitoring for conversion and impurity profile adherence. Final product compliance depends heavily on rigorous starting material QC.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • ISO 9001:2015-certified production systems
    • REACH Regulation (EC) No 1907/2006 for chemical safety
    • EPA PRIA registration standards (for USA-destined actives)

    Typical usage ratio

    • Added at 1.2–2.0 mole equivalents per batch, adjusted for conservation and target molecule yield.

    Downstream process integration

    • Liquid phase introduction during stepwise coupling or ring expansion reactions.
    • Controlled pH and temperature to minimize undesirable byproduct formation.
    • Continuous monitoring of carboxyl conversion rate during chlorination or alkylation.

    Final product types

    • Cyclopentanoid herbicide actives
    • Ketone-based insecticide precursors
    • Intermediates for pheromone/repellent synthesis

    3. Fragrance and Flavor Ingredient Synthesis

    Specialty fragrance compound manufacturers utilize this compound to build complex musk and cyclopentane-derived aroma molecules, serving the fine fragrance and food ingredient sectors. Its cyclopentane skeleton forms the backbone of target molecules through targeted ketone reduction, ring expansion, and acylation stages. Sensitivity to trace contaminants and strict alignment to food safety rules drive batch-level analytical documentation from raw material intake onwards.

    Industry compliance standards

    • IFRA (International Fragrance Association) Code of Practice
    • FEMA GRAS (Flavor and Extract Manufacturers Association) eligibility
    • ISO 22000 Food Safety Management for food-contact ingredients
    • EU Flavourings Regulation (EC) No 1334/2008

    Typical usage ratio

    • 0.2–1.5% w/w in fragrance intermediate syntheses; food flavor ratios depend on target formation rates and allowable limits per end-use.

    Downstream process integration

    • Introduced in the initial aldol condensation or reduction step for core musk builder synthesis.
    • Handled under controlled inert atmosphere to prevent oxidation and color shift.
    • Processed directly into esterification or further cyclization prior to blending and purification.

    Final product types

    • Synthetic macrocyclic musks for perfumery
    • Cyclopentanone-derived flavoring agents
    • Specialty aroma chemicals for food and beverage

    4. Advanced Polymer Synthesis

    Manufacturers developing specialty polymers integrate this ketoacid as a monomer influence agent, particularly where backbone rigidity or unique reactivity from the cyclic structure is required. The acid provides control points for post-polymerization functionalization and molecular weight distribution. Deployment is closely governed by polymerization temperature, co-monomer selection, and the necessity of integrating functionalized carboxylic sites with performance targets in downstream plastic or elastomer applications.

    Industry compliance standards

    • ISO 9001:2015 Quality Management Systems for manufacture and testing
    • FDA 21 CFR 177.1520 (for food-contact polymers, if applicable)
    • RoHS (Restriction of Hazardous Substances Directive for electronics polymers)
    • REACH registration and chemical safety assessment documentation

    Typical usage ratio

    • Ranges from 0.5–4.0 mol% of total monomers, scaled per target polymer crosslink density and mechanical specifications; adjusted by experimental results in pilot batches.

    Downstream process integration

    • Monomer solution fed into reactor during initial batch charge of polymerization.
    • Careful control of acid to co-monomer ratio to ensure targeted incorporation and minimal chain termination.
    • Purification via precipitation or ultrafiltration before downstream compounding.

    Final product types

    • Functionalized specialty polymers for adhesives or sealants
    • Elastomeric copolymers
    • Polymer intermediates for electronics and engineered components
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    Certification & Compliance
    More Introduction

    3-Oxocyclopentanecarboxylic Acid: Precision Crafted for Reliable Performance

    Shaping Chemistry with Depth and Reliability

    On the production floor, where glass reactors hum and quality is measured down to tenths of a gram, each batch of 3-oxocyclopentanecarboxylic acid presents a careful intersection of experience, raw material control, and consistency in chemical transformation. Over the years in our plant, we’ve tracked this compound’s role as a crucial intermediary, guiding processes from pharmaceutical building blocks to specialty chemicals.

    Our current product runs with a model designed for practical application: 3-oxocyclopentanecarboxylic acid, chemical formula C6H8O3, molecular weight 128.13 g/mol. As with most cyclopentane derivatives, minor differences in process result in marked changes in purity, particle size, and reactivity. Understanding these subtleties begins in the kilo lab and unfolds with every scale-up trial; the lessons learned are written in the process routes and in the tight specifications for each batch.

    Pursuing Purity and Confidence with Every Lot

    Some buyers glance at purity figures and move on, yet every experienced manufacturer knows that decimals matter in synthetic chemistry. Our most common specification stands at a minimum purity of 98%, with typical impurities—such as other cyclopentanone derivatives—kept firmly below 1.0%. Water content is closely monitored, and chloride levels are routinely analyzed down to single-ppm range. These figures get double-checked by GC and titration, because downstream transformations, especially in medicinal chemistry or agrochemical intermediates, demand more than a “white powder” promise.

    The physical form arrives as a crystalline solid—almost always off-white. Under humidity, some caking can occur, so our team has learned over time to emphasize attention to drying and desiccated packaging. Some users request finer sieving to suit advanced synthetic routes. We offer several mesh sizes by custom request; most research and production clients favor a medium granule for both ease of handling and rapid dissolution.

    Process Control: What Sets Authentic Manufacturers Apart

    From the beginning, experience taught us the importance of controlling temperature conditions during cyclization and subsequent oxidation. Side reactions lurk in every shortcut, often resulting in decreased yield or unwanted by-products such as 1,3-diketones. Our reactors operate under digital feedback control to keep step-wise addition and cooling consistent, batch after batch. We don’t simply trust the numbers—we regularly take midpoint samples, run HPLC and adjust parameters. These practices translate to fewer variable results and lot records that trace back every change in raw material or process node.

    Unlike jobbers or traders, we oversee the entire chain. Raw cyclopentanone sources never mix from different suppliers mid-batch. We test all acylating agents for clean GC signatures and cross-check solvents for residual water. Each step is one we can stand behind in front of any visiting chemist or auditor, because we’ve all seen how skipping that extra column filtration can haunt a downstream hydrogenation step.

    Usage in Demand–From Industrial Synthesis to Lab Bench

    Application diversity often drives product design. Research groups employ this acid as a launching pad for more elaborate cyclopentane scaffolds, particularly in new enzyme inhibitor development or functionalized intermediates. Pharmaceutical plants reach for consistent lots in large volumes, since their downstream steps depend on reaction predictability.

    In pharmaceutical synthesis, especially in routes to cardiovascular or nervous system candidates, we constantly receive requests for detailed impurity profiles. At scale, the product’s reactivity supports smooth esterification or amidation, given the clean carboxylic acid function and tightly controlled keto position. The presence of a single exocyclic keto group, compared to saturated analogs, enables more controlled selectivity in multi-step organic syntheses. Our large reactors and investment in analytical support keep the process robust whether a customer seeks a kilo or a hundred.

    Specialty monomer research and custom rubber synthesis companies find its ring structure and carbonyl reactivity useful. For these projects, we work closely with customer R&D teams, sometimes adapting drying or packaging to their pilot plant requirements.

    Comparing 3-Oxocyclopentanecarboxylic Acid with Other Cyclopentane Derivatives

    Some newcomers to the field confuse this molecule with plain cyclopentanecarboxylic acid or with multi-keto cyclopentanones; the distinctions matter. Addition of a single keto group in the 3-position alters both electron distribution and reactivity, shifting the entire picture when planning a synthetic route for APIs, flavors, or complex ligands. The basic cyclopentanecarboxylic acid offers a simpler profile but misses the added selectivity from the oxo substitution.

    Some resellers blend or substitute closely related carboxylic acids in their listings; those differences play out later as low yield, unexpected isomers, or regulatory compliance headaches. We witnessed labs lose days of work—the result of reliance on poorly defined material sourced from a broker, rather than a documented lot with analytical backing. For a downstream user working on chiral synthesis or advanced intermediates, subtle shifts in starting material can disrupt process validation entirely. On our line, all batches include a signed certificate with full NMR and HPLC records. QC tests don’t just exist to meet paper spec—they provide assurance for every customer who invests resources in scale-up or regulatory submissions.

    Quality, Repeatability, and Client Trust

    We recognize that the true value of any specialty chemical rests in repeatable results. Science isn’t forgiving when solvents or upstream steps introduce variability. Teams in our plant train each season on procedures, not just with safety in mind, but around maintaining blend times, purity targets, and cleaning cycles. We treat every kilogram as if it’s headed for a critical step in an active ingredient synthesis.

    Regular audits from clients—sometimes from multinational pharmaceutical partners, sometimes from nimble biotech startups—mean our batch records stay thorough. Every deviation in processing or packaging is flagged and resolved openly, rather than left for a customer to discover mid-campaign. We’ve invested in high-volume drying ovens, inert storage, and traceability software because improvements in tools aren’t about automation—they reinforce accountability.

    After years delivering to demanding markets, we know that a missed delivery or off-spec batch affects more than just business—with research timelines, patent deadlines, and even regulatory filings on the line. Our job is to keep the chemistry boring, so our clients can focus on their innovation, not on troubleshooting raw materials.

    Meeting Real-World Needs: Packaging and Documentation Matters

    Logistics for specialty chemicals involves more than drum and label; it impacts integrity and ease of use in the lab and on the line. Packaging options span small glass bottles to lined drums for larger campaigns. Each container gets sealed in moisture-resistant foil to avoid the mild caking and hydrolysis we’ve seen with other, loosely packed suppliers. This small detail, hard-learned from early complaints and direct customer feedback, caused us to revise procedures years ago. Regular repeat users benefit most, since they pull from multi-kilogram lots with reliable flow and measure.

    We don’t overlook documentation, either. Our shipping teams attach not only a batch certificate, but full analytical reports with confirmed purity, moisture, and key impurity values. For pharmaceutical and regulatory-driven clients, we routinely assist with DMF and validation paperwork. Our process chemists work with customers, troubleshooting potential fit onto their own synthetic steps, sharing observations on storage, handling, and stability drawn from our own production data.

    Continuous Improvement: Staying Ahead of Challenges

    Regulatory trends and tightening end-user specs push us, batch after batch, to raise the bar. Over the last decade, we faced demands for lower trace metals, reduced by-product levels, and even fully documented supply chains—from raw ketones to final acid. New generations of process equipment and improved wash protocols help drive down cross-contamination. We catalog root-cause data from every deviation, upgrading processes not for show, but because downstream consequences matter.

    We share these measures and records with clients—a partnership built on honest reporting, not just ticking a compliance box. In practice, this has meant shifting to plant-based cleaning solvents after discovering persistent minor amine residues on older stainless lines. It’s meant continuously scaling analytical support—bringing more GC-MS, Karl Fischer titration, and chiral separation capacity up to handle increased demand for strain-specific, low-level impurity analysis.

    This push toward quality hasn’t come from marketing; it grows out of years seeing the pain points in customers’ own operations. One U.S. client responded with feedback after a failed hydrogenation step linked to a poorly controlled impurity from a previous vendor. By working together to analyze and correct the source, we both fortified internal controls and increased trust. Such stories multiply as regulations for pharmaceutical APIs, crop protection ingredients, and performance chemicals put more scrutiny on raw materials.

    Environment and Safety—Practical Steps Rather Than Empty Promises

    As a manufacturer, environmental practices and staff safety go hand in hand with product quality. The solvents and reagents in use require careful handling and proper recovery. Our team invests in closed-system reaction vessels, real-time monitoring, and waste stream tracking—not just to tick sustainability boxes, but because safe, clean operation means more reliable, predictable outcomes. Incidents get documented at every stage; improvement is a running project, not a scheduled campaign. Safe, practical solutions, like double-bagging acid in moisture barriers, prove their worth far beyond compliance, helping everyone from plant workers to end-users avoid headaches.

    With every lot we send out, our focus returns to safety oversight. Training, from hazard awareness to best practices in sampling, happens frequently. Staff are equipped with adequate PPE and spill containment is on hand in every transfer area. These measures don’t just keep insurance costs reasonable—they protect everyone who handles our chemicals, both before and after they leave our factory floor.

    From Bench to Bulk: Future Directions in Specialty Acid Manufacturing

    Looking at trends on the horizon, demand for ever-cleaner and more traceable specialty acids is only increasing. Research around bio-based oxidants, solvent-free processing, and circular chemical loops direct our R&D into more efficient, lower-impact processes. As a result, future lots may reflect not just old-school reliability, but improved sustainability and compliance—without trading off the quality that decades of experience have taught us matters most.

    Our approach will remain rooted in hands-on chemistry, clear documentation, and honest, technically informed communication with end users. New automation systems, process sensors, and control software enable further improvements in reproducibility, but they don’t replace the knowledge accumulated by a team that understands both science and the stakes of failure.

    In short, 3-oxocyclopentanecarboxylic acid production, at the hands of the original manufacturer, becomes more than a transaction—it’s a persistent endeavor in ensuring reliability, advancing chemistry, and helping users meet targets without surprise setbacks. By holding ourselves accountable, sharing what we learn, and responding directly to real-world challenges, we keep chemistry practical, high-performing, and trustworthy for scientists and production teams working on discovery, development, and commercial manufacture across fields.