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HS Code |
167668 |
| Chemical Name | 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine |
| Molecular Formula | C5H5N5O |
| Molecular Weight | 151.13 g/mol |
| Cas Number | 368-39-8 |
| Appearance | White to off-white powder |
| Melting Point | >300°C |
| Solubility In Water | Slightly soluble |
| Purity | Typically ≥98% |
| Boiling Point | Decomposes before boiling |
| Storage Conditions | Store at room temperature, dry and protected from light |
| Iupac Name | 4-amino-1,6-dihydro-6-oxopyrazolo[3,4-d]pyrimidine |
| Synonyms | Nipazine; Allopurinol analog |
As an accredited 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle containing 25 grams of 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine, sealed with a screw cap, labeled for research use. |
| Shipping | 4-Amino-6-Hydroxypyrazolo[3,4-d]pyrimidine ships in secure, sealed containers to prevent contamination and moisture exposure. Packages are labeled per chemical safety standards and include hazard information. Shipping complies with local and international regulations for laboratory chemicals, ensuring safe transit and handling. Expedited delivery options are available upon request. |
| Storage | Store 4-Amino-6-hydroxypyrazolo[3,4-d]pyrimidine in a tightly sealed container, in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizing agents. Protect from light and moisture. Ensure proper labeling and avoid sources of ignition. Use secondary containment to prevent spills and follow institutional chemical storage guidelines for hazardous laboratory chemicals. |
Applications of 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine in Industrial Manufacturing4-Amino-6-hydroxypyrazolo[3,4-d]pyrimidine serves as a critical intermediate in various high-value manufacturing sectors, supporting the synthesis of complex molecules and specialty materials. Below, we detail established industrial applications and provide relevant compliance, formulation, process, and product insights for each downstream segment. 1. Pharmaceutical Active Pharmaceutical Ingredient (API) Intermediate SynthesisThis intermediate is widely adopted in pharmaceutical research and commercial API production, especially for antineoplastic and antiviral agents. Its structure enables the assembly of fused heterocyclic motifs found in advanced drug candidates. Our customers primarily use it in multistep synthetic routes leading to kinase inhibitors and nucleotide analogs. During formulation, chemists must tightly control impurity profiles and reaction stoichiometry to ensure consistent yield and regulated endpoint purity. Industry compliance standards
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2. Veterinary Drug Intermediate ProductionVeterinary pharmaceutical producers employ this compound in synthesis networks for animal health actives, targeting anti-infective and anti-inflammatory agents. It supports step-growth procedures in preparing heterocyclic bulk drug intermediates. Formulation scientists monitor batch-wise impurity carryover and adjust charge levels according to regulatory target specifications. High reproducibility in batch operations is essential due to strict veterinary quality oversight. Industry compliance standards
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3. Agrochemical Active Ingredient Building BlockThe crop protection industry uses this molecule as a scaffold in synthesizing pyrimidine-based pesticides and selective herbicides. It enters the process as a coupling partner in cyclization and functionalization steps for developing novel agrochemicals. Manufacturing chemists must validate process-specific residual content according to international agrochemical regulations. Accurate charge levels are required to maximize throughput and minimize byproducts that could affect regulatory submissions. Industry compliance standards
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4. Dye and Pigment Intermediate for Specialty ColorantsChemical colorant developers introduce this heterocycle in syntheses for high-temperature stable dyes and pigment dispersions used in textile and ink applications. It enables formation of extended conjugated systems, improving color fastness and UV resistance. Technicians monitor input ratios for batch-to-batch hue consistency, and comply with international product safety and export regulations on residual materials. Industry compliance standards
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5. Research Chemical Reagent for Nucleic Acid Analogue SynthesisChemical research laboratories and diagnostic kit manufacturers require this compound as a reagent in the custom synthesis of nucleic acid analogues and probe molecules. It features in construction of nucleotide mimics and labeled biomolecule standards used for genotyping and NGS reference assays. QC teams ensure individual lots meet analytical reagent specifications, with usage based on planned oligonucleotide or polymer modification volume. Industry compliance standards
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6. Fine Chemical Intermediate for Specialty Material ResearchAdvanced materials producers and academic laboratories select this compound for preparing functionalized pyrimidine derivatives, contributing to pilot-scale production of organic semiconductors and sensor substrates. During pilot synthesis, process managers track substrate-to-reagent ratios for scalable reproducibility, especially for electronic property assessment and surface functionalization needs. Purity control remains a top priority due to downstream material device requirements. Industry compliance standards
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Creating high-quality specialty chemicals takes more than just following a recipe. Over years of chemical synthesis, you learn which materials hold up under scrutiny during pilot trials or in downstream use. We manufacture 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine with a firm commitment to consistent purity and reliable batch profiles. Each lot exits the reactor on the back of real hands-on work—monitoring each stage, checking intermediates, and making adjustments the textbooks can’t always anticipate. The payoff reflects in lower trace impurities and batch-to-batch performance that research teams and formulation chemists can lean on.
Our shop doesn’t start with fancy marketing promises. Teams from drug discovery, core intermediates, or diagnostic manufacturers have asked about stability in storage and performance across synthesis. The way we build every batch traces to these practical concerns. There’s nothing theoretical about the impact water content or residual metals can have on a sensitive downstream reaction. Years of scale-up and regular interaction with large-volume users taught us the pitfalls and fixes: careful control of drying and tight segregation of tools that come in contact with precursors or product, constant validation of QC practices, and patience in recrystallization—especially with heterocycles. These habits stick after you hear how a small impurity threw off an entire project.
Our current model for 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine meets the needs seen most often in medical and agrochemical research. Scale ranges from hundreds of grams in early trials to multi-kilo quantities for established projects. Each production run targets at least 99% assay by HPLC, with regular checks by NMR to confirm structure. Solubility profiles, moisture content, and particle size distribution matter because these shape not only processability but also reaction pathways downstream.
Packing up this compound isn’t just a matter of filling jars. Air, light, and even the packaging material can trigger stability concerns in sensitive nitrogen heterocycles. Real feedback from teams working in hot, humid regions led us to double-layer packaging and inert-atmosphere sealing for larger orders. These aren’t afterthoughts—they come from seeing products lose potency or transform during storage at customer sites.
4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine often gets lumped in with a wide family of pyrazolopyrimidine scaffolds. In actual manufacturing settings, subtle differences in ring substitution or formulation can change everything: solubility, reactivity, or compatibility with certain synthetic steps can swing on single atom changes or traces of isomers. Over time, we’ve taken apart failed syntheses from downstream partners and traced the issue back to small but crucial differences in input material. Soft, vaguely defined products become headaches in scale-up. Chemically, our focus fixes on delivering clean, single-component material with well-documented spectra accompanying every lot. Every month brings calls for modifications—a tweak to the amino group, a shift to methyl or nitro derivatives—but the foundation remains delivering a product that performs predictably and keeps surprises out of critical paths.
Some producers chase faster throughput by bumping up reactor loads or reducing recrystallization time. Experience shows this move usually brings higher color, more undefined residue, or challenging coarse particles. When we started batch-testing finished material with simulated-use protocols—actually running reactions under customer conditions—the findings showed that shaving an hour here or a drying step there created headaches down the line. Rigorous approach means slower cycles sometimes, but it also means teams spend less time debugging unexpected results from their intermediate batches.
No two production runs end exactly the same. Seasonal humidity, batch size, and even minor changes in upstream solvents can all affect finished product specs. Real-world chemistry doesn’t always fit tidy predictive models. We grew a practice of maintaining traceable records, not just out of regulatory necessity but out of habit born from years of answering to end-users. Every time an anomaly crops up—unexpected moisture pickup or off-standard color—we run soak tests, revisit drying curves, and, if need be, overhaul entire steps in the process. Peers in pharma or crop science appreciate getting on the phone to talk through these details.
Our chemists spend as much time in conversation with QC partners and customers as they do at the bench. Someone, somewhere, inevitably comes calling about a deviation, and it helps to have logs, spectra, and batches of experience ready to go. That’s often where next-level improvements are born—from practical troubleshooting after a late-night call about a failed coupling or a stopped pilot run.
Most interest in 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine starts in research. Drug discovery groups, screening for kinase inhibitors or antimetabolite analogues, keep us busy with small-volume, high-purity deliveries. As projects progress, requests shift to kilo or multi-kilo orders, driven by expanded screening, regulatory batch runs, or pilot plant requirements. Some teams in Asia focus on generics or process improvements, asking for compendial documentation alongside routine shipments. Feedback regularly leads us to tweak packaging or recheck analytical profiles.
Our material stands up to actual use. A recent customer in mainland Europe battled hydrolysis in a late-stage reaction, wasting weeks on troubleshooting. Their QC flagged an issue with microcrystalline contamination. Old habits from early career days prompted us to dust off a classic, staged-filtration check during pre-shipment, and we caught the problem before it hit downstream. That customer shipped back photos showing clear, particulate-free reaction slurries using our new stock. These are the stories that drive small but meaningful process changes factory-wide: swapping out filter media suppliers, retraining operators on wash protocols, or adding an extra visual inspection step after drying.
In the broader world of pyrazolopyrimidines, small changes echo in big ways. The 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine scaffold delivers a different blend of hydrogen bond donors and acceptors, creating unique stacking, solubility, and overall bioactivity patterns. Downstream applications in pharma, crop science, and diagnostics often call for these nuances. Our concentrated attention to assay, color, and impurity profile distinguishes our material from generic routes flooding the secondary reseller market. Customers who tried generic material from non-specialist sources usually see variable melting points, off-label colors, and inconsistent handling claims. Labs swamped by rejected batches or process hiccups tell us it pays off to trace the source and talk directly to manufacturers. If a problem crops up, there’s an actual bench chemist at our end who can investigate lot conditions, share data, or suggest process changes for better use.
Customers working in regulated industries—where trace impurities or uncertain batch history threaten program timelines—demand more than spec sheets. The documentation and support accompanying our material grew out of hard-earned experience. As demand for traceability climbs, more researchers value direct access to production records, spectra, and process flow data that only a manufacturer can provide.
Staying close to real users proves that packaging, technical support, and transparency around specification shifts drive long-term relationships. We host twice-a-year reviews with several of our larger partners, collecting data on unexpected retention, yield, or conversion issues. Our own teams recall a project where a simple packaging change (from high-density polyethylene to specific amber glass) quartered the product loss during long trips through tropical climates. Our operators now log packaging selection alongside production details. This level of detail often outweighs price differences, especially when lost batches or weeks of resynthesis stack up.
We refuse to rush output at the expense of traceability. With high-value, nitrogen-rich heterocycles, the risk of trace contamination—residual solvents, metals, or dust—tends to rise whenever process shortcuts are taken. Staff training doesn’t just check boxes; it rests on the lessons learned from real operational failures. A damaged liner, a skipped pH wash, or too-short drying—any of these can show up as confusion during a chromatographic analysis months later. Factory discipline means catching these before a customer ever sees them.
Manufacturers don’t get to hide behind buzzwords. Tough questions come from audit teams, not just procurement, and improving manufacturing integrity means opening up books, logs, and actual production histories. Traceability, consistency, and hands-on responsiveness back up our long-standing customer relationships far more than marketing copy ever could.
Years of fielding questions and fixes from real production partners shaped our approach. Once, a contract lab discovered a recurring micro-impurity in an unrelated reference standard using equipment also cleaned with reclaimed solvents. Our response—a full facility audit and investment in single-use disposables—cut that impurity rate to zero. Experience, backed by actual operations, lets us avoid theoretical answers and stand by practical fixes. Whether a researcher needs support troubleshooting LC/MS results or a process developer needs to trace batch conditions, our priority is to provide clear, factual, and documented answers.
Bringing new derivatives or grades to market doesn’t start on paper. We routinely get chemistry challenge requests—trials for new salts, co-crystals, or functional group modifications. Most times, no off-the-shelf process exists, and our development lab works up from grams to commercial scale. Each trial reveals limits: solubility curves that diverge from literature predictions, need for slow cooling or tailored crystallization, or unforeseen instability pockets. We don’t sugarcoat the effort required; every innovation needs robust analytical support and patience at the bench. Over the years, we built a strong internal know-how library—every failed run, every odd impurity catalogued, every fix documented. Teams value this transparency: not everything works, but our record shows what does.
Several extended research partnerships began with a single challenge batch. The teams came back year after year, refining protocols, targeting new analogues or process improvements. Our lab staff has presented at both industry meetings and joint review sessions, sharing insights straight from the floor—side-by-side with customer chemists. Both parties learn. That two-way flow drives incremental quality gains, from optimizing reaction yields to innovating on green chemistry approaches for legacy steps.
Handling and shipping sensitive chemicals never counts as a background job. Our logistics and documentation teams double-check every step, ensuring cold chain protection, ADR-compliant labeling, and rapid response to any in-transit concern. Close cooperation with freight teams, regulatory consultants, and packaging suppliers grew from hard lessons—confusion over labeling once nearly stalled a time-critical delivery. Since then, full digital tracking and pre-ship verification ensure each order moves safely and swiftly.
As environmental regulations tighten, future-proofing our production methods stays high on the agenda. Our environmental team preemptively audits effluent streams, tracks solvent recovery rates, and updates waste management protocols—long before regulators start asking. Every innovation targets minimizing resource footprint, reducing waste streams, and advancing support for partners working toward sustainable production chains. For every lot of 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine, lifecycle tracking and environmental impact statements continue to be updated, deploying the latest practices in compliance and stewardship.
An effective manufacturer grows alongside the industry. Regular engagement with customers, academic groups, and process engineers drives continuous improvement on new grades, formulations, analysis updates, and application methods. We see the compound’s role evolving in next-generation drug design, computational biology, and advanced crop science platforms. Each new client, each new project, brings a learning opportunity—be it new application contexts, modified spec requirements, or batch-handling innovations.
Direct engagement, clear documentation, and open lines for troubleshooting stay at the core of how we build trust. Most of all, the willingness to acknowledge mistakes, adapt processes, and invest in long-term solutions sets manufacturing partners apart from resellers or third-party sourcing channels. The evolution of 4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine’s quality, availability, and industry applications reflects these principles in action—no shortcuts, no abstract promises, just consistent effort, genuine expertise, and a commitment to real-world results.
4-Amino-6-Hydroxypyrazolo[3,4-D]Pyrimidine stands as more than a reagent in our portfolio. Years of investment in process control, analytical rigor, application knowledge, and direct customer support flow into every bottle and sack leaving our facility. Real-world experience, documented transparency, and ongoing improvements back up every shipment. Teams in pharma, crop science, and diagnostics trust products that arrive as specified, with every analytical trace, and a team ready to answer the tough questions. As manufacturing partners, we ensure tomorrow’s breakthroughs get the reliable foundation they need today.