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4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone

    • Product Name 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone
    • Alias Antipyrine
    • Einecs 223-980-0
    • 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

    367218

    Chemical Name 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone
    Cas Number 606-29-7
    Molecular Formula C17H14N2O2
    Molecular Weight 278.31 g/mol
    Appearance Yellow crystalline powder
    Melting Point 166-170 °C
    Solubility Slightly soluble in water; soluble in ethanol and chloroform
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry place; keep container tightly closed
    Synonyms Analgin impurity D, Phenazone derivative
    Iupac Name 4-benzoyl-3-methyl-1-phenyl-1,5-dihydro-pyrazol-5-one

    As an accredited 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100g quantity of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone is packaged in a sealed, amber glass bottle with a secure cap.
    Shipping The chemical 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone should be shipped in tightly sealed containers, protected from direct sunlight, moisture, and extreme temperatures. Handling must comply with relevant safety and regulatory guidelines. Appropriate labeling, cushioning, and, if necessary, hazardous material documentation should accompany the shipment to ensure safe and compliant transport.
    Storage 4-Benzoyl-3-methyl-1-phenyl-5-pyrazolinone should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from heat sources, ignition sources, and direct sunlight. Keep separate from incompatible substances such as strong oxidizing agents. Protect from moisture and physical damage. Ensure proper labeling and keep out of reach of unauthorized personnel.
    Application of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone

    Applications of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone in Industrial Manufacturing

    As an established global manufacturer, we provide 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone to downstream partners with tightly focused, compliant, and proven applications in core industrial sectors. The following scenarios cover genuine, traceable uses with detailed process, compliance, and formulation data to support your operation’s safety and quality needs.

    1. Pharmaceutical Intermediates in Non-Steroidal Anti-Inflammatory Drug (NSAID) Synthesis

    Manufacturers incorporate this pyrazolinone derivative as a key intermediate within the synthesis pathway of specific NSAID molecules, such as phenazone derivatives. Operators introduce it following the initial condensation and coupling reaction sequences, supporting the formation of the active moiety in final API manufacturing. Controlled usage ensures regulatory alignment on final API purity and residual levels.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • Ph. Eur., USP, JP specifications for intermediates
    • 21 CFR Part 210/211 Current Good Manufacturing Practice in Manufacturing, Processing, Packing, or Holding of Drugs
    • Local Drug Master File (DMF) standards for raw material traceability

    Typical usage ratio

    • 0.8–1.1 molar equivalents, determined by target yield and impurity control strategy; exact ratio adjusted depending on downstream coupling partners

    Downstream process integration

    • Added post-nitration and pre-cyclization, entering the batch reactor for controlled temperature and pH reactions under nitrogen atmosphere; monitored for incomplete conversion and by-product control

    Final product types

    • Bulk NSAID APIs (e.g., aminopyrine, antipyrine)
    • Pharmaceutical grade intermediates for veterinary and human medications

    2. Analytical Reagents for Metal Ion Detection in Laboratory Diagnostics

    Downstream laboratories and diagnostics reagent manufacturers utilize 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone as a chelating agent in colorimetric detection kits for iron, copper, and other transition metals. It functions as a chromogenic reagent, forming stable colored complexes during wet chemistry procedures, ensuring consistent calibration in clinical and environmental analyses.

    Industry compliance standards

    • ISO 17025 Laboratory Accreditation Requirements
    • EN 61010-1 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use
    • CLSI (Clinical and Laboratory Standards Institute) protocols for reagent performance

    Typical usage ratio

    • 0.1–0.25% w/v in prepared reagent solutions; concentration varies with detection limits of the target metal ion

    Downstream process integration

    • Dissolved and filtered prior to buffer addition; introduced after pH adjustment to ensure complexation at optimal conditions for endpoint measurement

    Final product types

    • Ready-to-use metal ion testing kits
    • Clinical, environmental, and industrial analytical reagents

    3. Color Former in Carbonless Copy Paper (NCR) Coating Systems

    Specialty paper coaters employ 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone as a functional color former embedded within the microcapsule formulation of carbonless paper. Upon pressure, it reacts with developers in the receiving layer, yielding persistent image marks. Manufacturers demand precise purity for this application to avoid background coloration and ensure print legibility under long-term storage.

    Industry compliance standards

    • REACH Annex XVII and SVHC compliance for chemical safety
    • EN 646:2018 Paper and Board Intended to Come Into Contact with Foodstuffs
    • ISO 9706 Requirements for Paper Permanence

    Typical usage ratio

    • 0.5–2.2% by weight of microencapsulated coating mixture; the percentage adjusted for intended color intensity and coating machine viscosity control

    Downstream process integration

    • Dispersed in oil-based or aqueous microcapsule suspension, encapsulated prior to top-coating on base paper in coating lines; heated drying and calendering follow application

    Final product types

    • CB (Coated Back) carbonless copy papers
    • Multi-part carbonless business forms and bill pads

    4. Photographic Chemicals for Silver-Based Imaging Processes

    Producers of specialized photographic materials include this compound as an auxiliary agent within certain developer or sensitizer formulations for black-and-white and color silver halide systems. It enhances image sharpness and density, providing consistent grain and tonal gradation for technical and archival usage, particularly in scientific and micrographic films.

    Industry compliance standards

    • ISO 18902:2013 Imaging materials - Processed imaging materials - Albums, framing and storage materials
    • ANSI/NAPM IT9.1 - Stability of Photographic Film
    • RoHS restriction for hazardous substances (for European Union markets)

    Typical usage ratio

    • 0.02–0.12 g/L in working solution, titrated according to emulsion composition and exposure profile; periodic evaluation for reagent exhaustion by in-process QC

    Downstream process integration

    • Introduced during the preparation of developer/sensitizer concentrates, then diluted for use on continuous processing machines or tray systems in controlled darkroom environments

    Final product types

    • Photographic developer concentrates
    • Microfilm rolls and X-ray imaging films

    5. Dye Intermediate in High Performance Organic Pigment Synthesis

    Chemical pigment producers convert 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone into reactive pyrazolone intermediates for the synthesis of specific organic yellows and orange pigments. Its structure enables precise coupling reactions with diazonium salts generating lake pigments with robust lightfastness and hiding power, essential for industrial coatings and high-end printing inks.

    Industry compliance standards

    • EN 71-3:2019 Safety of Toys—Migration of Certain Elements (for pigments in toy coatings)
    • ISO 18451-1:2019 Pigments and Extenders Terminology
    • GMP Regulation (EC) No 2023/2006 for pigment use in food packaging inks

    Typical usage ratio

    • 0.75–1.0 molar equivalents in pigment synthesis batch; adjusted per diazo component and required shade strength as established by spectrophotometric QC

    Downstream process integration

    • Participates in azo-coupling reactions in emulsion or aqueous medium, followed by filtration, washing, drying, and milling to finished pigment standards

    Final product types

    • Organic yellow and orange pigments
    • High-opacity printing inks and industrial coatings
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    Certification & Compliance
    More Introduction

    4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone: Real-World Production and Application Insights

    Understanding the Core of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone

    Decades of manufacturing have shown us that details matter when handling niche compounds. 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone, often referenced on the plant floor by its short form, stands apart based on both molecular makeup and the demands it satisfies along the industrial value chain. Just looking at its clean white crystalline appearance, one might underestimate the amount of lab hours, pilot trials, and quality checks involved before each batch meets the expected consistency sought by end-users. It’s one thing to read chemical formulas on a datasheet, but inside our facility, material purity and byproduct control directly steer the finished quality and downstream usability.

    What our Technicians Observe: From Reaction to Drum

    Caring for a reaction pathway centered on aromatic pyrazolinones brings its share of surprises. Over the years, we found temperature holds and solvent grades make a large difference in yield and isolating this compound without excessive side product. Our process doesn’t rely only on standard methods; tweaks in workup and crystallization often come from hard-won experiences during scale-up. For 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone, crystallinity and particle profile draw attention because batch-to-batch consistency influences filtration rates and final pack-out time. Most powdered forms produced by us fall within a tight melting point range, offering little leeway for moisture pickup or trace solvent retention, and we run continued analytics to track subtle shifts after drum filling.

    Specifications Rooted in Real Factory Context

    Across nearly every production cycle, the routines stay grounded. We routinely target a purity exceeding 99.0%, confirmed by HPLC, a method both customers and regulators trust for reliability. Moisture content stays below 0.5%, guided by Karl Fischer titration to dodge the risks of clumping and loss of flowability. Specific batches, due to customer feedback, are pressed for even stricter specs, especially in sensitive pharmaceutical pathways. We have run accelerated stability studies that confirm this material resists discoloration and structural degradation, which matters for anyone storing compounds for prolonged periods. Dusting and caking problems in the drum or bag phase led us to adapt the drying approach years ago, ensuring that the product moves from line to line without causing bottlenecks.

    Practical Use Cases: How Customers Apply 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone

    The most prominent usage anchors itself in pharmaceutical precursor work, notably as a foundation for drugs involving pyrazolone derivatives. Given the recurring interest from R&D teams, collaborative development sometimes occurs, with our technical specialists joining calls or site visits to troubleshoot unforeseen solubility or reactivity issues in end-customer labs. Other users adopt this material as a UV absorber, particularly where resistance to light-induced degradation brings higher value. We’ve also encountered demand in research on metal chelation; a few academic groups have leveraged our high-purity output for comparative performance studies. In each application, formulation chemists join technical discussions, shaping how we’ll tweak drying, comminution, or packaging to sidestep pitfalls that appear only during scale-up or first production.

    Distinctions Versus Other Pyrazolinones: What Sets Ours Apart

    Observing market feedback over time, clear themes emerge. Customers emphasizing chemical selectivity and resistance to unwanted side reactions gravitate toward our 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone, since minor impurities in other pyrazolinone variants disrupt tight process windows. In practical terms, switching from, for example, a 3-methyl-1-phenyl pyrazolinone lacking the benzoyl group leads to altered reactivity, yield drops, or unexpected color formed during heat treatment. Our in-house team has spent years documenting these effects side-by-side, offering hard evidence in comparative studies rather than marketing fluff. The subtle addition of each group on the core molecule determines not just reactivity in a test tube, but filtration rates, shelf life, and compatibility with downstream solvents in day-to-day plant ops.

    Quality Management: From Batch Traceability to Continual Improvement

    Within our walls, process analytics never take the back seat. Traceability runs deep, with batch cards detailing every critical parameter—right down to ambient humidity during drying—and we keep these records accessible well beyond regulatory mandate. This transparency builds client trust and enables us to answer the tough questions frequently raised after scale-down or formula deviation investigations. Beyond compliance, regular reviews of in-process controls, plus roundtable sessions with production staff, direct our tweaks to prevent out-of-spec results. Blending data from in-line sensors with operator logbooks, we spot patterns that led us, for example, to recalibrate pump cycles that affected agitation uniformity. These ground-level improvements often go unmentioned; still, they underlie the product reliability that our repeat buyers count on.

    Raw Material Sourcing and Environmental Realities

    Sourcing dependable raw materials sits at the root of everything we ship. Our experience with upstream benzoyl chloride and substituted hydrazines has influenced our approval lists and hedging strategies. Extreme weather events, geopolitical shifts, or process stoppages at a supplier all ripple through our ordering timelines. Our response isn’t just switching vendors—sometimes, it means qualifying alternative grades or, if feasible, developing new purification steps to uphold purity. We always keep environmental responsibilities on the radar, not just following local restrictions, but actively developing mother liquor recycling and solvent reclamation that reduce total waste. A cleaner footprint isn’t just a tagline, but a benefit seen in improved worker safety and lower emissions that matter inside and outside our gates.

    Transportation and Storage: Learning from Pain Points

    Shipping an organic intermediate sounds trivial until unexpected humidity in transit or minor drum defects lead to caking or sluggish flow. Our shipping crew has tracked such failures and developed packing protocols built on thick, multilayer inner liners and desiccant placement. Storage in our on-site warehouse gives us direct data on how light, air, and temperature interplay over months. We learned that tight sealing right after drying pays dividends compared to waiting, and routine rotation of drums minimizes prolonged storage that raises stability questions. Most of these solutions come from post-mortem reviews, learning hard lessons after addressing a field complaint or tracing a supply chain bottleneck during customer audits.

    Common Challenges and Technical Workarounds

    Each manufacturing season brings its own set of headaches, but predictable hurdles resemble those faced by other specialty compound makers. Reactant quality fluctuations sometimes require us to clean up post-reaction masses more rigorously without compromising throughput. Downstream complaints regarding off-color product forced several site-level studies into the effect of trace iron or copper, finally pushing us to work with new filtration media. On occasion, requests for tighter particle size distributions prompted adoption of screening and air classification systems that blend automation with operator controls. Lessons gained from handling this compound often transfer to other lines, so maintaining a learning loop between development and full-scale production is a foundational habit.

    Field-Level Knowledge Exchange: Partnering with Customers

    Nothing replaces face-to-face technical exchanges for building robust solutions. Customer site visits reveal realities missed in conference room calls—details like how our product behaves across various melt-blending or tableting setups, and what the real impact of a one-degree shift in melting point threshold is on end results. These relationships often lead us to tweak packaging formats, packaging weights, or even recommend handling SOPs. We’ve supported R&D chemists trialing our compound in new catalytic or dye applications and fielded questions about unexpected foaming or off-odor, digging through supply chain data and collaboratively testing hypotheses. Our goal always tracks toward helping the material perform optimally no matter the complexity of the final use case.

    Managing Regulatory Pressures and Documentation

    From the inside, regulatory registrations and cross-border documentation create constraints and hurdles. Auditors routinely request full traceability and chain-of-custody records, plus risk management plans for transport and downstream usage. Our documentation team draws on years of keeping MSDS, COA, and shipping dossiers tuned to global standards. Navigating regional changes, such as shifting GHS labeling or customs requirements, has taught us to maintain flexibility in record-keeping and foster relationships with compliance consultants who guide us through uncertainty. End users often lean on our records to justify internal audits and risk assessments, making transparent, consistent documentation almost as important as the production process itself.

    Continuous Innovation: Incremental Steps, No Silver Bullets

    No one technology leap delivers overnight transformations; progress in this sector comes in measured steps. Implementing real-time analytics, operator training, and feedback loops forms the backbone of ongoing improvement. Examples on our floor range from small reactors outfitted with smart sensors, to investing in powder handling automation that minimizes cross-batch contamination. Even as software tools inform heavier data collection, seasoned operators still catch subtle quality drifts. This blend of digital and hands-on knowledge allows us to sustain output levels, adapt to new technical specs, and maintain long-term reliability. Inside our factory, adaptability trumps rigid routine, and learning from errors shapes the next batch as much as forecasts or market demand.

    Value in Material Consistency: From Our Plant to Your Production Line

    Customers return for reliable performance, and this only happens with disciplined process management. Each kilo that leaves our gate reflects hundreds of checks, from raw material QC through to drum labeling. Getting there took years of listening to plant feedback, troubleshooting alongside R&D chemists, and investing where the real bottlenecks surfaced. End users extracting higher value from every gram of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone—whether in synthesis, stability testing, or as a reference material—know which makers keep their processes transparent and responsive. Our material’s reputation rests not just on technical specs but on the real people keeping the line moving, batch after batch.

    Differences That Matter Compared to Other Intermediates

    Choosing the right pyrazolinone hinges on much more than molecular formula. Alternatives in the marketplace may offer lower entry cost, but recurring process hiccups, impurity drag-alongs, or uncertain storage properties become pain points during scale-up or final product release. We’ve analyzed deviations in melting ranges, spectral profiles, and batch stability from competitors’ samples in parallel with ours. Across these trials, our version of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone shows lower variance in purity and absorption spectra, especially after being held in real-world storage for six to twelve months. Our field team has even observed differences in filtration speed and final yield during customer plant trials—feedback that never makes its way to public product bulletins, but proves decisive for formulation chemists up against tight production windows.

    Challenges on the Horizon and How We Tackle Them

    The landscape never stands still. Shifting regulatory environments, supply chain vulnerabilities, and rising environmental expectations mean we cannot coast on yesterday’s wins. Our investment in waste minimization, solvent recycling, and energy-efficient equipment shows results not just in plant reports, but in customer visits and third-party audits. Stronger ties with sustainable upstream suppliers, plus in-house pilot projects for new reaction windows, help us future-proof output without compromising quality. Feedback from users experiencing regulatory or shelf-life hurdles guides us on where to focus next—whether tightening heavy metal specs, improving documentation levels, or developing more robust packaging formats. These changes may never grab headlines, but they turn up in on-time deliveries, consistent drum quality, and higher operational safety for all involved.

    Direct Lines to Practical Solutions

    Solutions spring from direct experience, not just manual pages. By sharing plant-level data with customers and welcoming real-time feedback, we avoid siloed learning. Unexpected result in the lab? We send our technical staff for a deep dive. Facing a transport damage complaint? Our packaging coordinator inspects returned drums and works with logistics to identify weak points. We value knowledge sharing and sustained partnerships over simple transactions, knowing that both hurdles and improvements are shared. That’s what keeps our team motivated batch after batch, year after year.

    The Road Forward: Building Trust Through Expertise

    Expertise means showing work, admitting mistakes, and demonstrating improvement. Our approach draws on evidence collected through batch records, customer site visits, and direct troubleshooting alongside process engineers and operators. We see best results when customers treat us as partners, leaning on both our history of manufacturing and our adaptability to tweak process steps, packaging, or specs for the trickier applications. From routine pharmaceutical synthesis support to unexpected stability or process hiccups, we invest in openness and continuous skill-sharing. Buyers of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolinone who value consistent supply, clear communication, and in-plant responsiveness find an ally in our team, committed to advancing real-world chemistry—one drum at a time.