Anhui Liwei Chemical Co., Limited
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2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol


    • Product Name 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol
    • Alias Pterostilbene
    • Einecs 681-150-9
    • Mininmum Order 1 g
    • Factory Site Lingwu, Yinchuan, Ningxia, China
    • Price Inquiry sales2@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
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    Specifications

    HS Code

    549949

    Iupac Name 2-Methoxy-5-[(E)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenol
    Molecular Formula C17H18O5
    Molecular Weight 302.32 g/mol
    Cas Number 134587-37-0
    Appearance Solid (powder or crystalline)
    Melting Point 148-152°C
    Solubility Soluble in organic solvents (e.g., DMSO, ethanol)
    Chemical Class Stilbene derivative
    Functional Groups Methoxy, phenol, alkene
    Smiles COC1=CC(=C(C=C1)O)/C=C/C2=CC(=C(C(=C2)OC)OC)OC
    Synonyms Pterostilbene 3'-hydroxy-5'-methoxy derivative
    Logp About 3.1 (estimated)
    Ec Number N/A
    Rotatable Bonds 5

    As an accredited 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol 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 5 grams of 2-Methoxy-5-[(E)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenol, securely sealed, with hazard labeling.
    Shipping This chemical, 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)ethenyl]phenol, must be shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. Ship via courier following all relevant local, national, and international chemical transport regulations. Ensure proper labeling, hazard identification, and inclusion of a safety data sheet (SDS) with the shipment.
    Storage Store **2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)ethenyl]phenol** in a tightly sealed container, protected from light and moisture. Keep at room temperature (15–25°C) in a cool, dry, well-ventilated area, away from incompatible materials such as strong oxidizers. Use appropriate personal protective equipment when handling, and avoid direct sunlight and sources of ignition. Ensure proper chemical labeling and storage according to local regulations.
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    Certification & Compliance
    More Introduction

    2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol: A Closer Look at Production and Application

    Understanding the Compound Beyond the Name

    The chemical industry recognizes a challenge when handling compounds like 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol—a name that never rolls off the tongue, but the impact of which deserves a thorough look. As a manufacturer deeply involved in the synthesis and scaling of specialty organic chemicals, we approach each molecule by considering both its structure and its genuine utility to formulators, research teams, and downstream innovators. This specific compound, with its methoxy and hydroxyl functional groups parsed across two aromatic rings, shows up in discussions around drug discovery, advanced material synthesis, and as a starting point for further chemical modification.

    Why Structure Matters—The Core of Molecular Functionality

    Looking at the molecular architecture, the three methoxy groups clustered on the distal ring alter electron distribution across the whole molecule. This not only ramps up solubility in certain organic solvents but also plays a subtle role in how the molecule interacts as a ligand or base for new molecular designs. The unsaturated ethenyl link joins the two aromatic halves, bringing rigidity without eliminating the opportunity for future transformations. We recognize, after years in the plant, how minor differences in ring substitutions direct entire research campaigns: a misplaced methyl group or missing hydroxyl changes everything from UV absorption to metabolic fate.

    Our teams have watched researchers from advanced pharmaceutical labs come in with feedback after trialing this compound for new analog development. The electron density introduced by the trio of methoxy substituents leads to alterations in receptor targeting. Chemists experimenting with antineoplastic or antiviral candidates see differences in binding affinity and metabolic breakdown that simply do not arise with less substituted analogs. The added hydroxyl at the ortho position gives another handle—contributing to both hydrogen bonding potential and possible further derivatization. We have produced variants with only two methoxy groups or lacking the ortho phenol, and end-users often see marked decreases in functional viability.

    Manufacturing Focus: Process Consistency Equals Reliable Results

    Years of hands-on batch synthesis and scale-ups have shaped our view of quality. Rather than lean on broad promises, we focus on the details learned from years at the reactor's edge. For 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol, strict control of moisture and reaction temperature keeps the unsaturated bond intact and untouched by unwanted side reactions. We utilize high-purity solvents throughout crystallization and maintain a singular focus on removing trace impurities, as even minor contamination interferes with subsequent functionalization steps. Going beyond analytical purity is not just a habit; it directly translates to neutral melting profiles and reliable chemical behavior in customers’ labs.

    Colleagues who synthesize similar molecules often cut corners with solvent recycling or “good enough” filtration. In our experience, biopharma firms and advanced materials groups encounter downstream headaches—which always trace back to marginal shortcuts in the original manufacturing run. By tracking every kilo produced, matching batch-to-batch color and microcrystalline structure with certificate data, we keep waste minimal and yield high. Recrystallization protocols may be old-fashioned, but real accuracy beats the pursuit of novelty for novelty’s sake.

    Testing, Verification, and Real-World Outcomes

    No customer wants to gamble on a batch, yet the laboratory reality demands more than below-threshold impurities. By prioritizing routine HPLC and NMR throughout every step, we catch anomalies before product reaches the door. Years ago, a batch with trace byproducts made its way into a customer’s combinatorial library, slowing an entire screening campaign. That experience drove us to develop more rigorous controls—not in response to regulatory pressure, but to maintain the trust that brings repeat collaborators.

    From talking shop with research leads, we hear frequent frustration about sources that underdeliver on consistency or, worse, rely on ill-documented synthetic routes. By focusing on full spectral documentation and traceability, we help researchers sidestep a months-long troubleshooting process. The rise of more sensitive detection techniques in downstream analytics only underscores the responsibility at the manufacturing level. We welcome site audits and customer-driven verification—seeing each as another layer of improvement, not an obstacle to get around.

    Application in Research and Development

    The best insights come from the end-users themselves. Chemists developing new lead compounds in oncology or CNS disorders appreciate a molecule that responds predictably in coupling reactions. That set of three methoxy groups isn’t just a structural signature—it determines the outcome of specific palladium-catalyzed couplings, delivers measurable effect in Suzuki reactions, and holds up to tough alkylation protocols.

    We’ve fielded calls from formulation scientists who notice that compounds lacking the ortho-phenol drift apart during in-process assays, leading to batch failures. The rigidity imparted by the trans-ethenyl bond gives the research community something measurable. Analytical and process chemists observe less degradation under photo- and thermo-induced stress, opening the door to rigorous high-throughput screens or even mimics for more robust analog construction.

    Some groups use the base molecule as a building block for semi-synthetic derivatives, making tweaks that shuffle the methoxy pattern to probe different metabolic pathways. Others focus on physical characterization, interested in crystalline phase, color, and melt transitions. We’ve seen this compound anchor work on controlled-release matrices and show up in assembly protocols for shape-persistent organic frameworks. The combination of the rigid backbone and strategically positioned functional groups lets research chemists tune reactivity instead of fighting solubility or byproduct issues.

    Comparison with Structurally Similar Compounds

    Demand exists for a wide range of stilbene analogs and methoxy-phenol derivatives, but not all offer the multi-pronged utility of this molecule’s substitution pattern. Years of customer feedback and R&D experience point out meaningful differences between our product and analogs with fewer methoxy groups or altered ring positions. The presence of a phenolic hydroxyl married to the multiple methoxy groups opens up phase transfer, enhances reactivity under basic or acidic conditions, and often sees smoother downstream reactions.

    Take the comparison to 3,4,5-trimethoxystilbene as a case in point. Lacking the ortho-phenol, users consistently report lower solubility in polar organics and less control in electrophilic additions. Alternatively, disconnecting the ethenyl linkage removes molecular rigidity, flattening SAR outcomes for drug hunters and leading to higher decomposition rates during storage. Removing a methoxy unit on the aryl ring alters the hydrogen bonding array, which can tip the equilibrium in competitive assays or slow down catalysis tasks. These differences are not theoretical—they dictatethe real direction of ongoing synthesis projects and often make or break an advancement from bench to commercialization.

    This compound demonstrates specific advantages in applications where electronic tuning and molecular stability govern outcomes. Our customers tell us that less-substituted or more-fragile analogs break down too easily under microwave-assisted reactions, or fail to produce desired intermediates without high levels of byproduct. Because our synthetic process maintains full substitution, analysts see cleaner spectra and tighter melting point windows, improving downstream R&D productivity.

    From Plant Floor to Bench: The Human Side of Chemistry

    One lesson stands out after decades on the line: the best chemical innovation comes from a dialogue between plant engineers and end-user scientists. We don’t just respond to specification sheets. The phone calls from postdoctoral researchers asking for specific polymorphs, or requests from project leads for expedited batches, drive our own re-investment in purification, monitoring, and feedback loops.

    Our staff regularly shares stories about how modifications to an upstream filtration step shaved hours off crystallization, improved powder flow, or saved a crucial late-stage reaction at a customer's lab. Years ago, one customer found trouble during scale-up in a new API route. We listened, adjusted for tighter nitrogen protection, and the compound performed up to standard. These changes rarely make it into research journals, but they are the reality at the chemical plant level, and they often determine success or costly rework for our partners.

    Training plant operators, in our experience, brings more benefit than automated tweaks. A single technician, vigilant at the chromatography step, can spot irregularities unseen by instruments. Our plant takes pride in a crew who communicate not just issues but potential optimizations, drawing on cumulative decades of hands-on learning.

    The Long View: Sustainability, Responsibility, and What Actually Matters

    Every kilo of 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol leaves our facility as evidence of incremental improvement. Reducing solvent waste, switching to reusable purification media, and optimizing reaction kinetics to minimize energy consumption have become priorities because efficiency serves both the bottom line and the communities downstream.

    Our environmental health and safety team works closely with process managers to ensure containment and minimize emissions, reflecting industry and societal expectations. Real risks show up less in the known safety datasheets than in the day-to-day handling and long-term waste profile. Most of our application partners operate under strict local and global regulations; keeping our flowsheets transparent and our documentation comprehensive supports their downstream compliance obligations too.

    We keep tabs on offers to “outsource” quality, but in practice unmonitored partners invite headaches for us and our customers. Any process using methoxyphenols at volume must anticipate and manage VOCs, reactant run-off, and byproduct disposal, and we document every corrective action. Insights gained here do not stop at our gate. Researchers expect not just performance, but a commitment to process improvement and supply chain transparency. Our adherence to these practices means future generations of scientists can innovate without inheriting operational blind spots.

    In the Field: Feedback Driving Development

    Real advances in specialty chemicals rarely come from a vacuum. Each cycle begins with a challenge presented by an R&D chemist. Whether building on in-vitro results or responding to a clinical pin, our process development adapts through feedback and direct troubleshooting. One pharmaceutical partner needed a tighter particle size range for automated feeder systems. We refined our grinding and sieving sequence with this direct feedback, tracking improvements back through product performance reviews. That openness keeps us competitive but, more importantly, pushes the boundary for what specialty manufacturing can provide.

    By design, this compound reaches beyond one field or application. Materials teams use it as a monomer precursor; analytical testers find it reliable in calibration sets; custom synthesis companies request it as a launchpad to branch out more elaborate structures. Our position as manufacturer means direct control over input purity, adjustment to meet new upstream restrictions, and direct consultation with a diverse research base.

    We have made tough calls in discontinuing less-sustainable process reagents, weighing short-term cost increases against broader operational wisdom. Every change shows up in the end-use experience: scientists who work at the bench prefer predictability, and our reforms serve those who value sturdy, replicable outcomes, not just theoretical idealizations.

    Challenges and Solutions—From Purity to Performance

    No process runs free of obstacles. Water content proves particularly tricky, as even low levels can trigger unwanted side reactions in this class of compounds. We have invested in in-line drying and advanced monitoring to keep hydrolysis at bay. Teams working with less robust processes routinely mention anomalous readings during standard analytical runs; tracing these outcomes to their roots has made us better and honed our troubleshooting toolkit.

    Batch-to-batch reproducibility stands as a cornerstone of our day-to-day. To avoid surprises, we rely on more than final assays. Sampling at multiple points, real-time trend monitoring, and ongoing staff training underpin our claim that a repeat order matches the last—because our own success depends on it as much as our customers'.

    Users have challenged us to push melting point consistency tighter and have tested our NMR reports with third-party standards. Such scrutiny, in our view, reflects healthy appetite for real proof. Years working under these conditions have shaped every procedural update we embrace. Customers with niche requirements for functional group reactivity get candid feedback on what is possible—and we keep pushing those margins as science evolves.

    Conclusion—Why 2-Methoxy-5-[(E)-2-(3,4,5-Trimethoxyphenyl)Ethenyl]Phenol Matters

    In our eyes, the value of a specialty chemical grows from clear communication, hands-on knowledge, and a collaborative spirit rather than buzzword promises or one-size-fits-all claims. This compound, defined by its methoxy- and hydroxyl-substituted aromatic rings, its trans-ethenyl bridge, and its reproducible reactivity, exists not in isolation but as a direct response to what today’s research teams demand.

    With each batch produced, analyzed, and shipped, we see the real stakes our customers face—projects that will lead to new therapies, materials, or chemical advances. The push for purity, process stability, and responsible operation does not come from distant marketing ideals; it comes from years at the reactor face, long hours perfecting synthesis, and an unending cycle of feedback and adjustment. From preparation to delivery, we focus on more than specifications; we support the innovators and problem-solvers who look beyond the current horizon, tackling challenges with both rigor and common sense.