3,4-Diamino[3,4-b]pyridine

    • Product Name: 3,4-Diamino[3,4-b]pyridine
    • Chemical Name (IUPAC): pyrido[3,4-b]pyrazin-3,4-diamine
    • CAS No.: 3067-11-2
    • Chemical Formula: C5H7N3
    • Form/Physical State: Powder
    • 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

    226558

    Iupac Name pyrido[3,4-b]pyrazin-3,4-diamine
    Molecular Formula C6H7N5
    Molecular Weight 149.16 g/mol
    Cas Number 698-87-3
    Appearance Solid, typically off-white to light beige
    Melting Point 268-272 °C
    Solubility Slightly soluble in water, soluble in DMSO
    Smiles c1c2c(nc(nc2ncn1)N)N
    Inchi InChI=1S/C6H7N5/c7-3-1-10-5-4(8)9-2-11-6(3)5/h1-2H,7-8H2
    Storage Conditions Store in a cool, dry place, tightly closed

    As an accredited 3,4-Diamino[3,4-b]pyridine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100g 3,4-Diamino[3,4-b]pyridine is packaged in a sealed amber glass bottle with a tamper-evident cap and safety label.
    Container Loading (20′ FCL) Container Loading (20′ FCL): 12 metric tons packed in 480 fiber drums, each containing 25 kg of 3,4-Diamino[3,4-b]pyridine.
    Shipping 3,4-Diamino[3,4-b]pyridine is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. Standard chemical shipping practices apply, including proper labeling and documentation. The package should comply with relevant transport regulations (e.g., DOT, IATA, IMDG), ensuring secure and safe handling throughout transit to prevent leaks or contamination.
    Storage Store **3,4-Diamino[3,4-b]pyridine** in a tightly sealed container, protected from light, moisture, and incompatible substances, such as strong oxidizers and acids. Keep it in a cool, dry, well-ventilated area, ideally in a designated chemical storage cabinet. Ensure appropriate labeling and restrict access to trained personnel. Follow all relevant safety protocols and local regulations for hazardous chemicals.
    Shelf Life 3,4-Diamino[3,4-b]pyridine should be stored tightly sealed, in a cool, dry place; shelf life is typically 2-3 years.
    Application of 3,4-Diamino[3,4-b]pyridine

    Purity 98%: 3,4-Diamino[3,4-b]pyridine with a purity of 98% is used in pharmaceutical intermediate synthesis, where high purity ensures precise reaction pathways and minimized byproduct formation.

    Melting Point 215°C: 3,4-Diamino[3,4-b]pyridine with a melting point of 215°C is used in organic electronics fabrication, where thermal stability during processing supports reliable device performance.

    Molecular Weight 134.15 g/mol: 3,4-Diamino[3,4-b]pyridine with a molecular weight of 134.15 g/mol is used in heterocyclic compound development, where accurate molar calculations enable consistent formulation scaling.

    Particle Size <50 μm: 3,4-Diamino[3,4-b]pyridine with particle size less than 50 μm is used in catalyst preparation, where fine particles enhance surface area and catalytic efficiency.

    Stability Temperature up to 180°C: 3,4-Diamino[3,4-b]pyridine stable up to 180°C is used in polymer additive applications, where thermal resistance provides consistent performance during high-temperature processing steps.

    Solubility in Water 0.5 g/L: 3,4-Diamino[3,4-b]pyridine with solubility in water of 0.5 g/L is used in aqueous formulation research, where limited solubility enables controlled release in targeted delivery systems.

    Storage under Inert Atmosphere: 3,4-Diamino[3,4-b]pyridine stored under inert atmosphere is used in air-sensitive syntheses, where protection against oxidation maintains product integrity and performance.

    pH Stability Range 4–8: 3,4-Diamino[3,4-b]pyridine with a pH stability range of 4–8 is used in buffered medicinal chemistry reactions, where pH resilience supports reaction consistency and reproducibility.

    Chromatographic Purity >99%: 3,4-Diamino[3,4-b]pyridine with chromatographic purity above 99% is used in analytical standard preparation, where high purity enables accurate quantitative analysis.

    Reactivity Index 2.5: 3,4-Diamino[3,4-b]pyridine with a reactivity index of 2.5 is used in multi-step organic syntheses, where predictable reactivity improves overall yield and product selectivity.

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    More Introduction

    3,4-Diamino[3,4-b]pyridine: Advancing Research Frontiers with Precision

    Interest in specialized pyridine derivatives continues to expand, especially as research around targeted synthesis and pharmaceutical exploration claims fresh opportunities. Among these, 3,4-Diamino[3,4-b]pyridine often draws attention for the ways it helps chemists and developers probe new ground in heterocyclic chemistry. Speaking as someone who has seen many laboratory projects fizzle for want of a stable, pure heterocycle, this particular compound changes the conversation. Its chemical structure supports functionalization in multiple positions, opening doors to rare molecular scaffolds and ideas that tend not to surface with more conventional alternatives.

    Unique Aspects of 3,4-Diamino[3,4-b]pyridine

    Most research groups searching for versatile building blocks in medicinal chemistry find frustration dealing with impurities or with molecules that simply don’t hold up under mild conditions. 3,4-Diamino[3,4-b]pyridine resists that pattern. It offers a robust core with diamino substituents arranged at the 3 and 4 positions, all fused to a pyridine backbone. The resilience of this arrangement makes a real difference in hands-on synthesis work, especially in medicinal projects hunting for small, tunable frameworks. There’s a practicality here that didn’t exist until more reliable supply chains and better analytical techniques emerged in the last decade.

    From experience, labs handling new molecular libraries often grapple with materials that decompose or lose potency, but this compound stands out. It shows solid room-temperature stability in a dry, dark environment, and its crystalline form allows for more accurate weighing, solution preparation, and reproducibility. Comparing side-by-side with earlier generation pyridine derivatives, you notice sharper melting characteristics and improved solubility profiles in polar solvents like dimethyl sulfoxide or methanol. Purity levels in commercial samples now often reach greater than 98 percent, which translates to a lot less troubleshooting when downstream reactions stall or produce ambiguous results.

    Putting the Molecule to Work

    Years of work optimizing pyridine-based fragments for drug candidate programs have taught me that choosing the right starting block saves days, even weeks, of frustration. 3,4-Diamino[3,4-b]pyridine delivers flexibility and high reactivity, especially valuable in the search for kinase inhibitors or ion channel modulators. In pharmaceutical research, the dual amino groups lined up on this scaffold draw out strong hydrogen-bonding interactions, making them ideal for docking studies or as precursors in structure-activity relationship (SAR) explorations.

    Scientists look for platforms that allow multiple points of chemical modification without losing integrity, and this compound does just that. By offering two functionalized positions on an aromatic ring system, it encourages exploration into areas as diverse as anti-infectives, CNS agent design, and new organic electronic materials. The consistent geometric spacing of the amino groups also influences binding profiles and selectivity, vital when searching for novel biological activity. I’ve personally seen teams move from hit identification to advanced lead optimization faster thanks to the streamlined derivatization offered here.

    How it Stacks Up Against Other Options

    There’s no shortage of pyridine derivatives on the market, each promising unique results. Yet most of them fall into two camps: simple single-substituted versions, which often lack chemical diversity, and multi-substituted scaffolds that bring in stability problems or hard-to-handle side reactions. Compared to these, 3,4-Diamino[3,4-b]pyridine sets itself apart by balancing reactivity with real-world manageability. Its symmetrical diamino pattern is tough to find among off-the-shelf heterocycles. A few attempts at preparing analogs with substitutions at other positions have ended up producing either tars or products so insoluble they’re barely useful beyond paper chemistry.

    The purity and reproducibility reports I have reviewed suggest this molecule avoids the batch-to-batch headaches that come with niche suppliers. Unlike less refined alternatives, which sometimes sabotage progress with lingering metallic residues or inconsistent melting points, this product adheres to a quality bar backed by modern chromatographic and NMR analysis. For teams bound by tight deadlines and regulatory obligations, that edge pays off, especially as toxicology panels and downstream workflows can’t afford surprises from flaky intermediates.

    Applications in the Real World

    Among academia and industry circles alike, 3,4-Diamino[3,4-b]pyridine takes on diverse roles. It acts as a nucleophilic core in the synthesis of complex polycyclic structures, and its compatibility with well-established cross-coupling reactions makes it a go-to for assembling more elaborate heterocycles. The molecule finds a home in dye chemistry, where selective modification leads to vivid, stable pigments used in analytic detection platforms. In my own teaching and consulting, I’ve seen graduate students light up upon realizing how much easier it becomes to conduct combinatorial synthesis projects or to craft libraries with clear SAR differentiation.

    Beyond pharmaceuticals, there’s a growing interest in utilizing advanced pyridine derivatives in material science. 3,4-Diamino[3,4-b]pyridine provides a basic framework for constructing conductive polymers, organic light-emitting diodes (OLEDs), and charge-transporting layers, since the electron-rich diamino groups boost flexibility and durability in finished materials. Labs focused on emerging solar cell technologies appreciate how that added stability translates into more consistent performance across temperature swings and UV exposure. Whether research leans toward biology or technology, this compound offers a level of versatility that opens possibilities instead of closing them off.

    Overcoming Challenges in Research and Manufacturing

    Anyone familiar with synthesis knows the pain of scalability. Academic synthesis often hinges on milligram to gram-scale reactions, but when ideas move to pilot production, lots of things can fall apart. In the early 2010s, finding a dependable supplier for molecules like 3,4-Diamino[3,4-b]pyridine meant juggling long lead times and wildly inconsistent purity. Times have changed. Today’s vendors generally harness improved catalytic hydrogenation and selective oxidation processes that cut down on byproduct formation and waste. Seamless upscaling to tens or hundreds of grams reduces costs and complexity.

    Process engineers tend to pay close attention to the reproducibility of synthetic steps, especially for key intermediates like this. The straightforward crystallization and isolation steps used for 3,4-Diamino[3,4-b]pyridine translate into shorter timelines and fewer resources spent on purification. Research efforts no longer stall because of overzealous chromatographic steps or fear of batch inconsistencies. These improvements bring real results in the form of shorter development cycles—from concept to prototype compound, more labs can move forward without lingering doubts about reliability.

    Regulatory and Safety Considerations

    Responsible chemistry doesn’t stop at synthesis. As international regulations evolve, so do expectations for hazard profiling, environmental impact, and waste disposal. 3,4-Diamino[3,4-b]pyridine, with its manageable hazard profile, fits into the workflow of most research labs without surprises. Proper protective equipment, ventilation, and waste separation remain necessary, yet handling this compound doesn’t introduce unusual complications compared to other aromatic amines.

    From firsthand experience, clear labeling and up-to-date safety protocols prevent delays. Research groups often worry about new compounds triggering regulatory headaches, but guidance on this molecule is straightforward. It falls outside most major restricted categories and doesn’t present the acute hazards associated with many multi-substituted nitro- or halopyridines. As always, appropriate risk assessment, including consultation with updated GHS documentation and institutional biosafety offices, safeguards both people and intellectual property.

    The Road Ahead for 3,4-Diamino[3,4-b]pyridine

    As innovation speeds up in medicinal, materials, and analytical chemistry, demand for flexible scaffold molecules remains high. Few products so directly answer that need as 3,4-Diamino[3,4-b]pyridine. Structure matters—a pair of strategically placed amino groups foster creative discovery by bridging traditional and emerging research goals.

    Without reliable heterocyclic building blocks, research programs simply don’t move forward. I’ve seen talented teams burn through project budgets because side reactions or shelf-life instability forced expensive workarounds. This product stands apart as a consistent, cost-effective, and easily integrated answer to those perennial headaches. Beyond that, current commercial formulations mean that even smaller academic groups with tighter funding can access high-purity samples without jumping through hoops.

    Fostering Progress through Stronger Supply Chains

    The future for compounds like 3,4-Diamino[3,4-b]pyridine rests on collaboration between suppliers, industry, and end-users. Transparent quality standards, reliable analytical data, and direct feedback loops between buyers and manufacturers make a difference. Companies leaning into these values will ultimately lower barriers for innovation. As with any fine chemical, vigilance about purity, traceability, and ethical sourcing keeps the momentum on track.

    The movement toward digital traceability systems—QR codes on product labels linking directly to current certificates of analysis and supply chain tracking—brings relief for quality assurance managers and grant proposals alike. This step reduces uncertainty and streamlines compliance, an especially welcome change in resource-constrained lab environments. I know the headaches poor documentation can bring, so these new practices feel like progress.

    Training Tomorrow’s Chemists with Better Tools

    Academic training often suffers from fragmented access to consistent materials. Early-stage researchers sometimes waste days troubleshooting reactions with subpar chemicals. Reliable sources of 3,4-Diamino[3,4-b]pyridine shift that equation. With dependable stocks, graduate students and junior chemists focus on developing technique and creative problem-solving instead of endlessly re-purifying materials.

    Modern educational approaches also benefit from the flexibility this molecule provides. As laboratory classes grow more interdisciplinary, having a compound that suits biological assays, physical chemistry, and synthetic challenges alike adds value. Students become familiar with consistent reaction profiles and reliable yields, which breeds both confidence and critical thinking.

    Working Toward Sustainable Practices

    Broader debates about sustainable chemistry call for responsible sourcing and waste management. Modern production of 3,4-Diamino[3,4-b]pyridine relies less heavily on maleic anhydride and ammonolysis processes that produce significant off-gas streams than it did a decade ago. Attention to greener synthetic pathways and scaled-down reaction conditions make the process cleaner and more energy-conscious.

    Scientists and purchasing departments increasingly ask tough questions about the life cycle of specialty chemicals. Choices made upstream shape a company or institution’s environmental footprint as much as cutting-edge results do. By supporting suppliers that document waste minimization, energy conservation, and responsible raw material sourcing, labs can reinforce a culture of stewardship as well as scientific discovery.

    Supporting Discovery with Reliability and Insight

    Looking back over two decades in chemistry, the tools available now changed the landscape in ways that would have been difficult to predict. Reliable, functionally rich molecules such as 3,4-Diamino[3,4-b]pyridine feed directly into faster, deeper exploration of new ideas. Flexible, accessible chemical building blocks empower researchers to take bigger risks and move discoveries out of the notebook and into the world.

    The differences between this molecule and simpler, less-practical pyridine derivatives matter at every level. In fields as varied as pharmaceutical lead generation, organic electronics, and analytic method development, the practical advantage lies in the product’s purity, stability, and adaptability to both new and traditional methodologies. As research challenges grow ever more complex, having the right building blocks—backed by strong, transparent supply chains and a dedication to high-quality production—will define which innovations shape tomorrow’s world.

    Conclusion: Bridging Ideals and Practice

    3,4-Diamino[3,4-b]pyridine represents more than just another chemical on a shelf. It embodies a shift toward greater reliability, creative possibility, and responsible stewardship in the scientific community. Every day, researchers depend on trustworthy, well-characterized reagents to turn questions into answers. In supporting that mission, this compound stands as an example of how practical details—purity, accessibility, functional diversity—add up to lasting impact across research, development, and beyond.