1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester

    • Product Name: 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester
    • Chemical Name (IUPAC): methyl 2-methylpropyl 4-(2-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate
    • CAS No.: 139713-50-7
    • Chemical Formula: C20H22N2O7
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@boxa-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    616176

    Chemical Name 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester
    Molecular Formula C20H22N2O6
    Molecular Weight 386.40 g/mol
    Appearance Yellow solid
    Cas Number 84418-67-7
    Melting Point 165-169°C
    Solubility Slightly soluble in water, soluble in organic solvents
    Boiling Point Decomposes before boiling
    Purity Typically >98%
    Storage Conditions Store at 2-8°C, protect from light
    Synonyms Nifedipine derivative
    Smiles CC1=CC(=C(C(=C1C)C(=O)OC(C)C)C(=O)OC)C2=CC=CC=C2[N+](=O)[O-]
    Usage Pharmaceutical intermediate
    Hazard Statements May cause skin and eye irritation

    As an accredited 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The chemical is packaged in a 25-gram amber glass bottle with a screw cap and hazard labeling for laboratory use.
    Container Loading (20′ FCL) Container Loading (20′ FCL): 8MT packed in 160 drums, each drum 50kg net, palletized and shrink-wrapped, suitable for export.
    Shipping **Shipping Description:** This compound is shipped in tightly sealed, chemically compatible containers, compliant with regulations for potentially hazardous chemicals. Packages are clearly labeled, stored upright, and cushioned to prevent leaks or breakage. Transport conditions avoid extreme temperatures and moisture. Secure, tracked shipping is used to ensure safe, timely delivery to authorized recipients.
    Storage Store **1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-methylpropyl ester** in a tightly sealed container, away from light, moisture, and sources of heat or ignition. Keep at room temperature or as specified by the manufacturer, in a well-ventilated, chemical-resistant storage area. Avoid strong acids, bases, and oxidizing agents. Follow standard laboratory safety and storage guidelines.
    Shelf Life Shelf life: Store in a cool, dry place, protected from light. Stable for 2 years under recommended conditions in unopened containers.
    Application of 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester

    Purity 98%: 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester with a purity of 98% is used in pharmaceutical intermediate synthesis, where it ensures high reaction yield and product consistency.

    Melting Point 156°C: 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester with a melting point of 156°C is used in solid-state formulation research, where it provides reliable thermal stability during processing.

    Molecular Weight 384.39 g/mol: 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester at molecular weight 384.39 g/mol is used in analytical method development, where it enables accurate mass spectrometric quantification.

    Stability at 80°C: 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester with stability at 80°C is used in accelerated stability testing, where it confirms material robustness under elevated temperatures.

    Particle Size D90 < 25 μm: 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester with particle size D90 less than 25 microns is used in microencapsulation processes, where it enables uniform particle dispersion and enhanced encapsulation efficiency.

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    Certification & Compliance
    More Introduction

    Introducing 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid Methyl 2-Methylpropyl Ester: Real Progress in Specialty Chemical Synthesis

    More Than a Compound: A Tool for Modern Research and Development

    In our laboratories, we don’t separate a compound from its impact. Each batch of 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-methylpropyl ester comes from a process shaped by feedback from scientists and years of refining. We have seen the demand for reliable intermediates soar as research in organic synthesis, drug development, and photochemistry branches into new directions. Awareness of specific molecular scaffolds enables efficient breakthroughs; that is why this compound finds a place in projects that need both precision and consistency in molecular architecture.

    The focus has never stayed just on the final product. It starts with raw materials, the selection of solvents, careful control of moisture levels, temperature monitoring, and a genuine understanding of what even trace contaminants mean to your downstream steps. Suppliers and customers tell us the same thing: modern synthesis punishes inconsistency. This ester, with its set methyl and nitrophenyl substituents, turns out to be an uptick in repeatability compared to previous-generation reagents. Lot-to-lot stability is not academic; feedback cycles from partner labs have pushed us to optimize for minimal residual solvents, strict isomeric purity, and clean chromatographic profiles.

    What Sets This Molecule Apart?

    Over the years, pyridine-based intermediates have formed the backbone of many research routes, but attention to the details hidden in each group attached to the core has separated routine agents from true specialty chemicals. The 2-nitrophenyl group changes interaction patterns with a range of reactants, subdues unwanted side reactions in several oxidative conditions, and imparts both solubility and UV-activity that researchers find useful in tracking or labeling applications. In contrast, variants lacking the nitro functionality or with alternate substituent placement cause more byproducts or unattractive yields in cyclization reactions. Slight changes in ester group structure also influence solubility in nonpolar and mixed-phase systems, so the methyl 2-methylpropyl ester remains favored where phase separation or controlled uptake is needed.

    We continuously encounter customers pursuing heterocycle-focused targets who mention the reproducibility puzzle in their work. Reaction landscapes shift subtly depending on each component’s spectral purity or physical stability during storage. This compound’s robustness in different climate zones and its shelf-life have made it a valued tool in both academic and industrial settings. With years of collaborative development discussions, we have honed drying and storage methods—not out of a checkbox mentality, but out of persistent troubleshooting requested by bench chemists and process engineers.

    Why Purity Matters at Every Step

    Far too often, bulk chemical suppliers chase shortcut economics. In our earliest trials with this pyridinedicarboxylic acid ester, it became clear that simple recrystallization alone falls short. Each analytical campaign—GC-MS, HPLC, NMR—has shaped tighter tolerances for the impurities that creep in from ordinary methods. Minute levels of unreacted starting material or low-volatility byproducts, even below 0.5 percent, have caused headaches in scale-up and in biological testing. Through regular dialogue with downstream users in medicinal chemistry and photochemistry, we implemented more extensive purification steps.

    Would high purity be necessary for every industrial route? Not all purposes demand it, but when teams push the limits of detection or mechanism deconvolution, an uncontrolled impurity might get mistaken for a weak ligand, a photolysis product, or a metabolic bystander. Our in-house approach eliminates that ambiguity from the start. The driving force remains research freedom and the ability to trust every gram shipped.

    Model Consistency: Not Just a Number

    Cataloging can make every product seem like a commodity. In reality, our Model DMNP-25 series delivers more than a label; it stands as a testimony to what repeated collaboration with the scientific community achieves. Analysts developed QC batches based on commentary from customers reporting challenges in past syntheses. We include extra checkpoints—UV purity scans, melting point confirmation, LC-MS monitoring—for each lot. The specifications we set for DMNP-25’s color, particle size, and moisture content evolved through a cycle of receiving samples back from research groups who had struggled with clogging or solubility in automated synthesis platforms.

    Colleagues from assay design departments have pointed out that even seemingly minor differences in solid-state form or powder flow can change how a compound integrates with high-throughput screening or how sampling robots dispense microgram quantities. Years of trial, feedback, and debugging have led to operational models where scientists call us after six or twelve months of storage to report that the product’s performance hasn’t changed.

    Understanding Specification Boundaries Beyond Standard QC

    Many manufacturers stop at chemical identity and percent purity, but our approach has moved past that point. Most specifications you’ll find elsewhere do not capture the dynamic realities inside modern laboratories—solubility in a range of common organic solvents (acetonitrile, DMSO, ether), hygroscopicity, and dust formation during handling. Our technical team answers daily questions about practical specs like dissolution rates, thermal stability under nitrogen purge, or minimal particulate content for formulation work. Most queries come directly from scientists, not purchasing departments. Reputation grows on these practical numbers more than any static purity line from a certificate.

    The road to real performance verification lies in actual testing, not theory. Our QC protocols subject every lot to freeze-thaw cycles, humidity stress, and repeat HPLC quantification after deliberate exposure to accelerated aging. Informations from these tests deliver more insight to the bench than a basic chemical label, and this ongoing data-sharing cycle cements trust between supplier and researcher.

    Real-World Uses: Applications Sparked by Ongoing Collaboration

    Some intermediates play a role only behind the scenes, yet researchers who’ve turned to 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-methylpropyl ester return with new questions and feedback that push our work further. Most chemists ask about its role in preparing an array of substituted dihydropyridines or its involvement in medical imaging agent synthesis. In medicinal chemistry, the nitrophenyl group often acts as a protective surrogate or as a precursor to tailored analogs. The methyl 2-methylpropyl ester allows exploration of ester hydrolysis kinetics, which is critical in drug metabolism modeling or prodrug design studies.

    Another application comes from polymer scientists, who probe new materials by introducing this compound into backbone-modification schemes. This helps direct the electronic characteristics of their products, a process not possible with generic pyridine esters. Photophysical researchers value the UV-absorptive profile, which creates a reliable marker for photolytic or spectroscopic tracing in solvent-screening projects. We didn’t anticipate some uses—customer ingenuity turns up deprotection strategies or metal-catalyzed reactions where this ester outperforms older intermediates.

    Refinements Based on Everyday Lab Realities

    Feedback flows in from multiple fronts. On the synthetic chemistry side, major pain points revolve around the predictability of the ester’s hydrolysis and the consistency of the starting spectrum. Teams working in flow chemistry emphasize the need for rapid dissolution and consistent particle size. Over time, by focusing on both application-specific requirements and fundamental process safety, we observed fewer batch failures for partners scaling from grams to kilograms. Performance consistency has proven to be as important as chemical properties in day-to-day research.

    We handled several instances where unresolved suppliers caused slowdowns or forced researchers to repeat months of validation work due to undetected contaminants or unhelpful documentation. Insight gained from such setbacks led to an open line between our quality assurance and our partners’ technical teams. This way, root-cause analysis uncovers not just surface problems—variations in yields, contamination in reactors, unexplained NMR peaks—but also inform ongoing improvements in plant operations and documentation standards.

    Solutions for Storage, Transport, and Day-to-Day Handling

    Lab handling of nuanced chemicals rarely gets considered as part of the specification, but anyone managing dozens of intermediates knows where the challenges emerge. Though many esters degrade on exposure to air or light, this compound’s stability profile removes a recurring worry. Chemists across climates—from subtropical regions with high humidity to cold, dry winters—have noted low clumping rates and a lack of visible change after weeks on open benchtops.

    For larger operations requiring drum or bulk packaging, feedback spurred reevaluation of our container material and closure seals. Technical data includes storage guidance for short- and long-term scenarios, but we always emphasize practicality. For storage in desiccated cabinets, glass or high-density polyethylene offers the expected protection without introducing sorptive bias common to soft plastics. Packaging sizes reflect not just commercial demand but also the need for small-batch and scale-up flexibility.

    Transparency in Sourcing and Manufacturing: Lessons Learned

    Plenty in this industry operate by separating raw material procurement from finished-goods manufacturing. Years of building transparent supply lines sharpened our commitment to batch integrity and traceability. We audit upstream suppliers, confirm analytical details at every handover, and reject any out-of-specification input to maintain the reputation that comes from owning every step of the process.

    Experienced scientists scrutinize every batch for traces of solvent, variation in melting point, or unexplained UV absorbances—each tied directly to synthetic methods. Success didn’t come from adopting standard protocols but from letting end-user feedback dictate which specifications matter in real laboratory situations. Years of working alongside project leaders and process handlers have shaped every adjustment, from titration schedules to vacuum drying cycles.

    Differences That Benefit the End User

    Alternatives on the market sometimes lure with lower upfront costs. We have seen plenty of returns for competitor lots due to overlooked trace contaminants or short shelf lives. By controlling synthesis conditions, using select crystallization aids, and providing tighter moisture specifications, this product reaches researchers with fewer surprises. It performs dependably under scale-up demands, both in technical departments and on the production floor, minimizing hidden setbacks in projects with tight timelines.

    The data from comparison studies highlights what careful manufacturing changes for end-users: minimized baseline drift in spectrophotometric analysis, sidestepping side-product accumulation in ester hydrolysis, and facilitating more predictable kinetics in enzymatic transformations. In feedback-driven improvement cycles, chemists have sent cross-comparisons showing side-by-side yields, with our product delivering higher yields, cleaner separations, and more manageable waste streams. For teams needing certainty and accurate record-keeping, each shipment includes a full QC report tailored to batch-specific findings, not just templated generic data.

    Working Alongside Innovators

    Being a manufacturer in today’s specialty chemicals sector has taught us to value curiosity and project-based feedback above any marketing claim. The lifeblood of this compound’s continued relevance is the willingness to accept criticism and to respond with meaningful changes. Many of the specifications praised now—low residual solvent content, ease of scale-up, and robust photostability—came from stories of lost research hours and painstaking root-cause investigations on the part of the scientific community. We rarely get anonymous orders; more often, buyers send technical queries or share hopes for new molecule development.

    We stay involved long after delivery, helping with troubleshooting storage, suggesting improved air-handling techniques, or advising on upfront purity checks for critical experiments. This cycle of trust and support pushes us to anticipate and resolve problems before they become obstacles. People want chemicals that fulfill their intended purpose and pull along the research process instead of becoming sources of headaches or uncertainty.

    The Road Ahead: Advancing Specialty Chemical Science Together

    Through hands-on experience, mutual respect, and an unwillingness to accept the weaknesses of previous intermediates, we have raised both the bar and the standard for 1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-methylpropyl ester. It doesn't just perform in reactions; it supports real innovation and removes barriers for teams creating the next wave of chemical understanding. Our approach will always favor deep integration with R&D teams, honest discussion over limitations and potential, and a firm belief that every well-characterized batch can help push boundaries a little further.

    For every gram reaching a laboratory bench, there’s a sustained effort at quality assurance, supported by evidence and a willingness to reshape processes in line with the realities faced daily by chemists and engineers. By sticking close to the needs of practitioners, we’ve made this compound more than a name—it’s become a dependable tool for scientific progress.