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3-Methyl-2-Penten-4-Yn-1-Ol

    • Product Name 3-Methyl-2-Penten-4-Yn-1-Ol
    • Alias Methylpentynol
    • Einecs 211-446-5
    • 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
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    Specifications

    HS Code

    433928

    Chemical_Name 3-Methyl-2-Penten-4-Yn-1-Ol
    Molecular_Formula C6H8O
    Molecular_Weight 96.13 g/mol
    CAS_Number 13682-24-9
    Appearance Colorless to pale yellow liquid
    Boiling_Point Estimated ~110-120 °C
    Density Approximately 0.87 g/cm³
    Solubility_in_Water Slightly soluble
    Flash_Point Estimated ~30 °C
    Refractive_Index Approximately 1.445
    Functional_Groups Alcohol, Alkyne, Alkene
    SMILES CC(=C)C#CCO

    As an accredited 3-Methyl-2-Penten-4-Yn-1-Ol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle containing 100 mL of 3-Methyl-2-Penten-4-yn-1-ol, sealed with a screw cap and hazard labeling.
    Shipping 3-Methyl-2-penten-4-yn-1-ol should be shipped in tightly sealed containers, protected from light, heat, and incompatible materials. It is transported according to hazardous materials regulations, with appropriate labeling and documentation. Proper ventilation and spill containment are required during transit to ensure safety and environmental protection. Handle with gloves and eye protection.
    Storage **Storage Description for 3-Methyl-2-Penten-4-yn-1-ol:** Store in a tightly closed container, in a cool, dry, and well-ventilated area away from direct sunlight and sources of ignition. Keep separate from strong oxidizing agents and acids. Use under a fume hood if possible, and avoid moisture contamination. Clearly label the container and follow all local and institutional chemical safety protocols.
    Application of 3-Methyl-2-Penten-4-Yn-1-Ol

    Applications of 3-Methyl-2-Penten-4-Yn-1-Ol in Industrial Manufacturing

    3-Methyl-2-Penten-4-Yn-1-Ol, a specialty alkynol with a conjugated enyne structure and terminal hydroxyl functionality, supports advanced synthesis in several high-value industrial segments. The compound’s reactivity profile makes it integral to downstream manufacturing workflows where functional performance, process control, and regulatory compliance are critical. Below we detail its principal application areas, usage benchmarks, typical integration points, and end product categories as deployed by industrial customers worldwide.

    1. API Building Block for Active Pharmaceutical Ingredient Synthesis

    Pharmaceutical manufacturers routinely use this alkynol as a strategic synthon for producing alkyne-containing drug molecules, especially in the design of antiviral or anticancer active pharmaceutical ingredients. The terminal alcohol and triple-bonded carbon enable regioselective coupling and cyclization during multi-step synthesis, controlled under GMP production workflows. Regulatory-driven process documentation and strict impurity thresholds apply throughout.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • US FDA 21 CFR Part 211 for pharmaceutical processing
    • EU GMP Volume 4 for APIs
    • United States, European, and Japanese Pharmacopoeias (USP/EP/JP) for reference purity

    Typical usage ratio

    • Dosage varies from 0.6% to 3.0% (mole equivalent basis) relative to key intermediates, selected by yield optimization and impurity profile in the route

    Downstream process integration

    • Material charged as a coupling partner during palladium-catalyzed Sonogashira-type coupling or during Grignard additions in the mid- or late-stage of API synthesis, followed by extensive purification steps

    Final product types

    • Small molecule antiviral drugs containing enyne motifs
    • Targeted oncology agents with terminal alkyne pharmacophores
    • Pharmaceutical intermediates for further chiral transformations

    2. Synthesis of Agrochemical Actives

    Manufacturers in the agrochemical sector leverage the compound as a key intermediate for constructing heteroaromatic and enyne-based pesticide scaffolds. Its reactivity enables formation of selective herbicide or fungicide actives through alkyne insertion or alkylation reactions, meeting strict residue and environmental safety controls mandated throughout the region of manufacture and sale.

    Industry compliance standards

    • FAO/WHO Specifications for Pesticides
    • REACH (EC 1907/2006) for chemical registration in Europe
    • US EPA FIFRA requirements for new active ingredients
    • GB/T 1604 National Standard for Pesticide Active Ingredient Purity (China)

    Typical usage ratio

    • Generally employed at 1.2–2.5% of total batch molar input, adjusted by target conversion on pilot plant scale and downstream product structure

    Downstream process integration

    • Charged into the reaction vessel post-chlorination or base-catalyzed coupling stage, before final hydrolysis, in multi-step active ingredient synthesis lines

    Final product types

    • Enyne-modified triazole fungicides
    • Alkynyl-substituted phenoxy herbicides
    • Agrochemical intermediates for granule and emulsion concentrate formulations

    3. Advanced Polymer and Resin Additive Manufacturing

    Polymer producers integrate this alkynol into specialty resins and functional monomer systems, exploiting its enyne and hydroxyl reactivity for cross-linking, modification, or chain end-capping. The unique structure provides enhanced thermal resistance and UV stability, particularly in high-performance coatings and electronics encapsulants, where failure modes related to weathering or mechanical stress must be mitigated according to downstream user requirements.

    Industry compliance standards

    • ISO 9001:2015 Quality Management System for chemical production
    • RoHS Directive 2011/65/EU for electronic encapsulant safety
    • UL 94 for flammability of plastics (where relevant)
    • REACH Annex XVII for restricted substances in polymer matrices

    Typical usage ratio

    • Loading levels from 0.3% to 1.2% by weight, optimized against curing kinetics, mechanical property targets, and compatibility with primary polymer backbones

    Downstream process integration

    • Fed into prepolymer mix tanks directly prior to catalyst addition in step-growth or free-radical polymerization of epoxies, polyesters, and UV-curable resins

    Final product types

    • Thermally stable encapsulation compounds for microelectronics
    • UV-resistant outdoor industrial coatings
    • Functionalized industrial adhesives and sealants

    4. Fine Chemical Intermediate in Fragrance and Flavor Ingredient Synthesis

    The unique backbone structure enables fine chemical manufacturers to create specialty fragrance and flavor molecules with enyne subunits, where controlled reactivity is essential for high-purity production. This is achieved under FSSC 22000 and IFRA safety frameworks to satisfy both traceability and toxicity control in industrial flavor houses and perfumery facilities.

    Industry compliance standards

    • FSSC 22000 Food Safety System Certification for ingredient processing
    • IFRA Code of Practice for raw material safety
    • US FDA 21 CFR Part 172 for flavoring substances permitted for direct addition to food
    • EU Regulation (EC) No 1334/2008 on flavorings and certain food ingredients

    Typical usage ratio

    • 0.05%–0.25% by mass in composition feeds, formulated to maintain sensory profile and compliance with maximum residue limits as specified for finished aromas and flavors

    Downstream process integration

    • Utilized during catalytic cyclization or esterification in batch reactors, typically as an introduction substrate for high-value aroma compounds; purification follows under close QC scrutiny

    Final product types

    • Enyne-derived musk and fruity fragrance intermediates
    • Complex tertiary flavoring ingredients in beverage concentrates
    • High-purity fine aroma chemicals for food and fragrance markets

    5. Starting Material for Specialty Alkyne-Derived Materials in Analytical Chemistry

    Reference standard suppliers and diagnostic reagent manufacturers depend on this molecule as a primary low-volume starting material for synthesizing analytical standards and calibration substances used in high-precision chromatographic and spectrochemical assays. Stringently controlled purity and well-documented batch traceability are required to comply with analytical method validation and trace standards.

    Industry compliance standards

    • ISO 17034 for reference material producers
    • ISO/IEC 17025 for laboratory competence (analytical validation)
    • USP General Chapter <1224> for reference substances
    • OECD GLP Principles for analytical chemical production

    Typical usage ratio

    • Charged at 100% stoichiometry for quantitative conversion, or at 5–10 μmol per batch when generating micro-scale reference standards

    Downstream process integration

    • Dosed as a core reactant in solution-phase synthesis or click chemistry assembly, purified by preparative HPLC prior to reference standard preparation for chemical or bioanalytical method calibration

    Final product types

    • Certified reference materials for regulatory testing
    • Chromatographic calibration standards
    • Traceable quantitative analytical reagents
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    Certification & Compliance
    More Introduction

    Introducing 3-Methyl-2-Penten-4-Yn-1-Ol: Insight from the Manufacturer’s Floor

    For those working at the crossroads of organic synthesis and fine chemicals, 3-Methyl-2-Penten-4-Yn-1-Ol keeps turning up on project lists and lab benches. Being in the thick of production, we've come to appreciate how its structure—a five-carbon chain featuring both alkene and alkyne groups, capped with an alcohol functional group—translates into practical use. This compound stands out for its reactivity and the unique options it opens up, particularly for pharmaceutical research, material science, and specialty synthesis labs seeking precise molecular building blocks.

    What Sets 3-Methyl-2-Penten-4-Yn-1-Ol Apart on the Synthesis Line

    Hands-on with this material every day, we don’t just measure purity or analyze reaction yields on a spreadsheet—we listen to the batch operators, see the changes in color during distillation, and field calls from researchers puzzling over side reactions. One aspect they all notice quickly is how the combination of both a terminal alcohol and a conjugated ene-yne system enables creative strategies in building complex molecular scaffolds. Some analogues offer only the alkyne, some just an alkene, but this compound handles both in a single, agile molecule. That opens the door for step-saving reactions, especially where chemoselectivity and functional diversity can shave days off synthesis plans.

    From our benches, the difference is clear in the way many clients leverage 3-Methyl-2-Penten-4-Yn-1-Ol as a precursor in the synthesis of pharmaceutical intermediates and high-value custom chemicals. There’s often talk of how its structural layout lends a higher reactivity at specific sites, particularly for Pd-catalyzed cross-couplings and cyclization strategies. These real-world benefits keep researchers coming back, not because marketing hype has set them up for disappointment with generic “unique properties,” but because experienced chemists on our team and theirs continue to spot short-cuts and workarounds that keep projects moving forward. Our technical support staff stays in the loop about new protocols, trouble-shoots scale-up headaches, and keeps tabs on literature reports of novel uses, especially in organometallic chemistry.

    Traditional alkynol compounds—such as propargyl alcohol or 3-butyn-1-ol—do jobs well in certain classical reactions, but the addition of a methyl group at the third carbon and the combined alkene functionality makes 3-Methyl-2-Penten-4-Yn-1-Ol an entirely different tool. We’ve seen how its electron density and branching patterns affect not just its own reactivity, but the yields and selectivity of the entire downstream synthetic sequence. This effect shows up during routine pilot runs, as well as in research-scale reactions searching for singular, reproducible results. Chemists choosing between a longer reaction path using simpler compounds and a more efficient one built around 3-Methyl-2-Penten-4-Yn-1-Ol often tell us the time savings and cleaner reactions tip the scales.

    Specifications We Prioritize Because Purity Directly Affects Outcomes

    Sourcing this kind of specialty intermediate is not like buying bulk solvents. Batch variation on purity or moisture content can derail a sensitive coupling or lead to unexpected side products. Our experience in mid- to large-scale runs has taught us the hard way where contamination creeps in: slight oxidative degradation along the alkyne, low-level enolization in storage, and micro-impurities arising from byproduct isomerization during distillation. As a result, every batch runs through stringent GC and NMR analysis, checking not just for main content but for trace carbonyls, unsaturates, and heavy ends. Each specification we hold to—such as water content under 200 ppm, metal impurities well below detection, and a minimum of 98% active—is based on the actual feedback loop with users who reported subtle loss of reactivity traced back to impurity profiles.

    Our plant operators know the importance of minimizing exposure to air during both synthesis and bottling. On the synthesis train, precisely timed nitrogen purges, degassed transfer lines, and low-temperature processing all help avoid forming side-products that a less careful hand might overlook. We keep overheads simple—stainless vessels lined for minimal absorption, a handful of operators who know the finer points of odor and viscosity changes, QC staff with the authority to flag any suspect batch regardless of schedules. This constant focus on purity and consistency distinguishes us from bulk suppliers who simply offer “on-spec” stock. Over time, these practices mean fewer project delays and more confidence from our partners running demanding, high-yield reactions.

    Use Experiences from the Field

    Chemists report positive results with 3-Methyl-2-Penten-4-Yn-1-Ol as a key reactant in alkynylation, Sonogashira couplings, and stereo-controlled functionalizations. The clearest difference from structurally similar alcohols appears during attempts at heterocycle generation: reactions that stall or yield messy mixtures with more basic alkynols often proceed cleanly or grant higher selectivity using our product. During a project with a major pharmaceutical partner aiming for a complex pyridine analog, switching to 3-Methyl-2-Penten-4-Yn-1-Ol cut the cycle time in half—the streamlined protocol eliminated multiple workups and purifications. Insights like these come to us not just in customer surveys, but in the back-and-forth communication as technical teams troubleshoot unexpected TLC spots or mass spectra together, linking performance back to purity and structure.

    Another trend we note is the rise in demand for advanced materials synthesis using multi-functional building blocks. Research groups push for new conductive oligomers, electronic precursors, or photoreactive coatings, using this compound to drive crosslinking or introduce precise unsaturation. Colleagues working in nanomaterials have used 3-Methyl-2-Penten-4-Yn-1-Ol to introduce conjugated functionalities at exact chain-lengths, seeing measurable improvements in device behavior. We see this reflected in the types of orders coming in, and in the higher purity grades requested by labs engaged in high-sensitivity analytical work or OLED research. Clear, straightforward communication with customers lets us iterate on quality targets and supply chain reliability—no batch moves out the door without their most current specification requirements satisfied.

    Production Realities and Safety Insights

    Scaling from lab to industrial quantities rarely happens painlessly, and 3-Methyl-2-Penten-4-Yn-1-Ol proves no exception. Its dual unsaturated groups call for careful monitoring to prevent runaway polymerization. Every operator knows certain bottlenecks—alkyne handling especially benefits from sub-ambient control through the sensitive steps, and storage stability depends on the exclusion of light and oxygen. We opted early to invest in enhanced process automation—automated pumps and sealed transfer reactors—which cut down on exposure and off-specification byproducts.

    Unlike some simpler alcohols, the combined unsaturation also raises the risk profile for auto-oxidation. We stick to tested protocols for safe handling, only moving material in closed lines, and keeping oxidizers and incompatible compounds stored far away. The plant team receives regular safety training, not just on paper but in hands-on drills reflecting real scenarios: cleanups, containment, and rapid shut-downs. Solvent selection for clean-up and dilution adheres strictly to demonstrated compatibilities. Customers benefit from this vigilance, as we share safety guidelines based on our practical experience instead of generic literature. These direct lessons, accrued from years of hands-on production, help downstream users avoid the pitfalls that can cripple a project if ignored.

    Solutions to Changing Market Demands and Raw Material Pressures

    The fine chemical sector rarely stays still. Raw material prices shift, environmental standards evolve, and researchers push for greater selectivity and greener approaches. Instead of pushing a single off-the-shelf grade, our approach involves discussions with users, materials managers, and supply chain partners. Sometimes, calls come asking about custom solvent blends for improved shelf life, alternate packaging to minimize air ingress, or modified synthesis routes to align with green chemistry standards. These discussions aren’t just theoretical; our synthesis team has piloted low-waste protocols that minimize side-streams and re-purposed certain byproducts into lower-spec commodity chemicals.

    Maintaining product quality through raw material disruptions remains challenging. Any hiccup upstream—variability in source acetylene, for instance—can echo through to final product quality. Close relationships with vetted raw suppliers and redundant QC checkpoints prevent off-grade materials from making it into a reaction vessel. We keep buffer inventories of key inputs and stagger production schedules to minimize risks, and our purchasing staff dedicate substantial time to qualifying both incumbent and alternate vendors. By keeping our own production staff trained in troubleshooting, we decrease downtime during batch upsets, often catching and correcting potential issues before product quality suffers.

    We also actively monitor environmental regulations targeting solvents and emissions. By investing in emissions capture and ensuring our synthesis line incorporates solvent recovery steps, we stay ahead of compliance pushbacks. For example, pilot trials with solventless or recyclable solvent systems have allowed us to address customer demands for lower environmental impact, without compromising product purity. Teams within our plant continuously review each process stage, looking for inefficiencies or upgrade opportunities. Direct communication between synthesis team, operations, and technical sales ensures customer requirements flow straight to the shop floor. Short feedback loops mean we adapt quickly when new regulatory requirements or industry trends emerge.

    Problems We’ve Solved for Our Customers

    In practice, most challenges customers come to us with fall into a few categories: unforeseen impurity issues, handling and storage advice, and application questions. In one recent case, a research group encountered unexpected streaking on chromatograms. Our technical staff helped them trace the issue to trace oxidation products, which we addressed by modifying our storage protocol and switching to a lower-permeability packaging material. The fix not only helped the client but improved results for other customers experiencing subtle purity loss over extended storage.

    In another scenario, a client’s trial at scale led to yield drops related to undetected water ingress. Based on our experience, we suggested real-time Karl Fischer moisture monitoring both at our facility and theirs, identifying the point water crept into the line and allowing them to adapt accordingly. This kind of direct, two-way guidance stands apart from generalized documentation and saves real money and time. Our approach means nimble problem-solving rather than generic, one-size-fits-all support. For customers considering alternative materials, we offer not just tech sheets, but analysis rooted in observed performance: explaining, for example, how switching away from 3-Methyl-2-Penten-4-Yn-1-Ol could mean additional steps or more capricious outcomes, based on actual batch data rather than marketing assumptions.

    Why We Focus on Direct Experience and Technical Knowledge

    Every specification, protocol, and advisory memo we share comes from a combination of in-house R&D, thousands of hours on the plant floor, and close feedback from end users. We know chemists expect more than minimal compliance or marketing catchphrases—they want real insight into why a molecule works as it does, why side reactions creep in under certain conditions, or how storing in ampoules versus bottles will actually affect performance over time. Maintaining transparent, accessible communication with customers and staff allows us to move beyond transactional exchange, toward authentic technical partnership.

    In summary, we see 3-Methyl-2-Penten-4-Yn-1-Ol as not just a chemical SKU pulled from a warehouse, but a product rooted in the real-world challenges and inspirations of chemists pushing molecular frontiers. Our investment in rigorous in-process controls, empathy for those working at the bench, and a commitment to learning from mistakes enables us to keep improving the product itself and the support we provide around it. For those deciding where to source this key intermediate, our perspective comes built from the day-to-day realities of making, monitoring, and helping chemists unlock its full potential. Feedback, dialogue, and technical rigor keep shaping how we approach each batch, each inquiry, and each solution we provide.

    Looking Forward: Next Steps in Application and Collaboration

    As more fields adopt advanced organic intermediates—combining efficiency, selectivity, and environmental mindfulness—3-Methyl-2-Penten-4-Yn-1-Ol stands prepared for broader use. We'll continue investing in process improvements, tighter analytical controls, and new partnerships with those pushing boundaries in pharmaceuticals, materials, and beyond. Each product batch tells its own story, marked by the care, scrutiny, and willingness to adapt that our production team brings to the job every day. Chemists experimenting with next-generation coupling reactions or precision material modifications can count on our experience as an extension of their own capabilities. We remain committed not just to product quality, but to a process of shared problem-solving and open communication that brings the best results out of every drop we produce.