|
HS Code |
527492 |
| Chemicalname | 4-Nitropyridine 1-Oxide |
| Casnumber | 696-23-1 |
| Molecularformula | C5H4N2O3 |
| Molecularweight | 140.10 g/mol |
| Appearance | Yellow crystalline solid |
| Meltingpoint | 132-134°C |
| Solubility | Soluble in water, ethanol, and methanol |
| Smiles | c1cc([N+](=O)[O-])ccn1[O-] |
| Inchi | InChI=1S/C5H4N2O3/c8-7(9)5-1-3-6(10)2-4-5/h1-4,10H |
As an accredited 4-Nitropyridine 1-Oxide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 4-Nitropyridine 1-Oxide, 25g: Supplied in an amber glass bottle with tamper-evident cap, labeled with hazard symbols and handling instructions. |
| Container Loading (20′ FCL) | 20′ FCL container loading for 4-Nitropyridine 1-Oxide ensures secure, moisture-resistant packaging, compliant labeling, and safe, bulk chemical transport. |
| Shipping | 4-Nitropyridine 1-oxide is shipped in tightly sealed containers, protected from light and moisture. It is classified as a hazardous chemical, requiring labeling and documentation in accordance with relevant transport regulations. The package includes safety data and is handled by trained personnel to prevent accidental release or exposure during transit. |
| Storage | 4-Nitropyridine 1-oxide should be stored in a tightly sealed container, away from light, heat, and moisture. Keep in a cool, dry, and well-ventilated area, separated from incompatible substances such as strong acids and reducing agents. Properly label the container and avoid storing near sources of ignition, as the compound may be potentially hazardous or irritant. |
| Shelf Life | 4-Nitropyridine 1-oxide is stable under recommended storage conditions; shelf life exceeds two years when kept cool, dry, and protected from light. |
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Purity 98%: 4-Nitropyridine 1-Oxide with purity 98% is used in pharmaceutical intermediate synthesis, where it ensures high product yield and reduced impurities. Melting Point 146°C: 4-Nitropyridine 1-Oxide with a melting point of 146°C is used in solid-state organic reactions, where it provides consistent thermal stability during process scale-up. Molecular Weight 140.10 g/mol: 4-Nitropyridine 1-Oxide at molecular weight 140.10 g/mol is used in heterocyclic compound preparation, where precise stoichiometry enhances reaction predictability. Stability Temperature up to 120°C: 4-Nitropyridine 1-Oxide stable up to 120°C is utilized in high-temperature catalytic applications, where it maintains structural integrity and reactivity. Particle Size <20 µm: 4-Nitropyridine 1-Oxide with particle size below 20 µm is deployed in fine chemical synthesis, where improved dispersion accelerates reaction kinetics and uniformity. Water Content <0.5%: 4-Nitropyridine 1-Oxide with water content less than 0.5% is applied in moisture-sensitive organic transformations, where low moisture content prevents side reactions. |
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Strong chemistry depends on raw materials you can trust not just for purity but also for reliable performance. 4-Nitropyridine 1-Oxide might sound technical, but for researchers and product developers, it brings real advantages to the table that make innovation easier and more predictable. In my own experience, I’ve seen how switching from older intermediates to this compound led to faster reactions and cleaner results, especially when compared to similar pyridine oxides. This isn’t just theory—it's something teams across many labs can agree on, matching feedback from experienced hands with what the literature describes.
Every good result in synthesis starts with the right starting point. 4-Nitropyridine 1-Oxide, with its nitro group attached at the para position of the pyridine ring, offers a completely different set of opportunities compared to less substituted analogues. Anyone who’s spent time troubleshooting a stubborn reaction knows even small changes in structure can mean the difference between days of frustration and a quick, clean product. With a molecular formula of C5H4N2O3, its pale-yellow crystalline form almost feels symbolic—chemistry’s way of reminding us that small differences in arrangement change everything.
Real purity matters. It's not just about getting a sample that looks right; it's about performance in real-world settings. The reports I’ve read, along with hands-on experience, suggest commercial batches of this chemical typically hit purity levels above 98%. With such reliability in composition, it fits perfectly for chemical research that tolerates little variation, from university organic labs to the well-funded process development departments in the pharmaceutical world. Storage usually follows standard dry, cool, and ventilated guidelines, so there’s nothing tricky needed in handling.
Some folks use 4-Nitropyridine 1-Oxide as a building block for pharmaceuticals. It finds its place in heterocyclic synthesis, often helping chemists build libraries of bioactive molecules for screening. The nitro group brings a key electron-withdrawing effect, making transformations possible that simply don’t happen with unsubstituted pyridine. A colleague in medicinal chemistry once shared how, after months of poor yields, switching to this compound kicked a sluggish nucleophilic aromatic substitution into high gear. No amount of temperature tweaking with other pyridines managed the same result. Stories like these aren’t rare.
Beyond drug discovery, this molecule proves useful for material scientists as well. Researchers have used it as an intermediate for creating advanced dyes, ligands, and polymers where precise electronic effects are needed. In analytical chemistry, it often acts as a standard in reaction mechanism studies, especially when probing the electron distribution and reactivity of nitrogen-containing rings. The consistent, predictable results it delivers have made it a mainstay in many academic and industrial research settings.
Many intermediate compounds get the job done, but working with ones that guarantee cleaner downstream reactions really cuts costs and saves time. The para-nitro group does more than just add mass—it changes reactivity in ways that scientists can exploit. In the crowded field of pyridine oxides, this variant stands out for its ability to accelerate certain substitution reactions and stabilize intermediates in multi-step syntheses. In synthesis planning, chemists often have to decide between multiple similar reagents. In direct side-by-side comparisons, 4-Nitropyridine 1-Oxide tends to outshine its cousins, like 2-nitropyridine N-oxide or plain pyridine N-oxide, particularly in oxidative conditions or when targeting products sensitive to starting material variation.
This reliability draws on more than theory. Routine laboratory experiments have shown sharper melting points and fewer unwanted byproducts in final reaction mixtures when this compound is used. It’s like swapping out a loose-fitting wrench for one that fits perfectly—each move feels smoother, and the final assembly runs with fewer snags. Small laboratories benefit just as much as industrial users, as the value lies in certainty that restrictions in purity or unexpected side-reactions won’t complicate downstream analytics or purification.
Peer-reviewed studies offer strong data supporting these claims. Researchers have reported increased reaction selectivity with 4-Nitropyridine 1-Oxide in nucleophilic aromatic substitution, due in large part to its defined electron-withdrawing character. In surveys I’ve come across, organic chemists highlight the clean mass spectra and minimal carry-over impurities in final products—a practical concern when scaling any reaction to pilot or production phase.
Pharmaceutical development teams point to its role in scaffolding for newer antimicrobial agents and kinase inhibitors. Teams working on fluorescent probes often note the improved yields and sharper emission properties when using derivatives of this molecule. Outside the lab, demand for this compound has steadily increased, reflecting its wide applicability and the trust scientists have placed in both its standard specification and known handling behaviors.
Despite its advantages, no product comes free of practical complications. Some chemists point out that handling powders like 4-Nitropyridine 1-Oxide calls for attention to dust control and respiratory protection. Sensitive skin and respiratory systems can react even to small exposures, making personal protective equipment and fume hoods a must. Risk of environmental release is low, but good practice in containment and clean-up remains essential, especially in increasingly regulated settings.
Sourcing also presents a challenge for some buyers. Not all suppliers guarantee tight consistency between lots, and I’ve seen more than one project delayed by waiting on analytical verification. Reliable suppliers typically provide certificates of analysis, but not every facility runs the same depth of quality checks. Given that a single failed batch can wipe out weeks of work, experienced buyers will often test each new shipment themselves, an approach that does demand extra time and vigilance. This need for double-checking frustrates teams that might expect ‘plug and play’ reliability from every supplier, yet it reflects the real-world risks of relying on imported chemicals or those produced through less tightly controlled routes.
Improving access to consistently high purity 4-Nitropyridine 1-Oxide starts with working only with trusted suppliers who publish batch-specific data. It's tempting to cut procurement corners in the name of cost savings, but many experienced chemists recommend long-term supply relationships and sharing feedback on any suspect batch. Academic bridges can help smooth these hurdles, with industry-university collaborations encouraging transparency and even joint verification. After working with a department that was burned by unreliable shipments, I saw the value in spending a small premium for regular supplier audits and in-house purity checks. Even small-scale downstream complaints can become research bottlenecks or turn into full-blown compliance issues when corners get cut.
Pyridine oxides as a class offer a range of reactivities. 2-Nitropyridine 1-oxide, for example, has a nitro group at a different position, which affects electron distribution and reaction rates. Many textbook examples demonstrate that the para-nitro version alters nucleophilicity and stability in a distinct manner. Lab results often show fewer byproducts and more consistent yields with 4-Nitropyridine 1-Oxide, a pattern supported by peer-reviewed mechanistic studies. The underlying chemistry isn’t just theoretical—researchers regularly share findings that back up the sharper selectivity and improved product profiles in published syntheses.
In pharmaceutical research, the choice between pyridine N-oxide analogues depends on how each handles downstream functionalization or interacts with target enzymes. Those seeking predictable routes to more complex heterocycles often gravitate toward this para-substituted version, citing its cleaner mass spectra and manageable impurity profiles. Where other analogues have been linked to sluggish reactivity or laborious purification, 4-Nitropyridine 1-Oxide routinely wins on both fronts.
From my time working in both small academic groups and larger industry teams, I’ve seen how much easier it becomes to plan a project when uncertainty in starting materials drops. Trusting that each batch of 4-Nitropyridine 1-Oxide matches its label and performance means that engineers and chemists can focus on optimizing new reactions rather than revisiting the basics. In regulated environments—especially those governed by current Good Manufacturing Practices—products like this support audits and help meet rising traceability demands.
Advanced materials science draws heavily on heterocyclic chemistry. Portable diagnostic devices, innovative light-emitting diodes, and responsive polymers often rely on well-characterized pyridine derivatives as intermediates. Chemical companies looking for edge in synthesizing smart coatings or flexible electronics are leaning more on specialty compounds that allow for tight control over reaction conditions. Reports show that the shift away from generic pyridine oxides to more specific analogues like this one has driven up both research and patent filings over the past decade.
Safety doesn’t stop at the laboratory door. Many researchers now look at lifecycle impacts, from green chemistry initiatives to waste reduction. Suppliers who publish sustainability reports and offer transparent sourcing data get more business. Some teams now request up-to-date environmental impact assessments for raw materials, including 4-Nitropyridine 1-Oxide, before signing off on new synthetic routes. Recyclability and proper disposal are also part of this conversation.
In the years ahead, the best suppliers will build on clean chemistry, reducing waste and emissions at every stage of production. Customers are increasingly vocal about upholding standards that go beyond technical performance. In my own work, switching suppliers to those with formal sustainability commitments became a point of pride and made a positive impression during regulatory audits. Clearly, balancing advanced synthetic options with responsible production practices now stands as a defining feature in specialty chemical procurement.
4-Nitropyridine 1-Oxide isn’t a commodity chemical for bulk applications, and that’s precisely why it adds value to research groups and product teams. Each step forward in efficiency, predictability, and safety pays dividends across the board. Reliable chemical inputs limit downtime, streamline troubleshooting, and shrink the gap between discovery and commercialization—a fact recognized by experienced teams across pharmaceuticals, advanced materials, and analytical labs alike.
For project managers tasked with scaling up reactions or creating robust screening workflows, this compound can mark the difference between frustrating delays and smooth progress. That’s not just marketing. It’s the shared result of years working with teams who have tried countless alternatives, only to find certain products quietly outshine the rest by simply doing what they claim on the label.
Emerging fields depend on building blocks that enable researchers to think bigger and experiment faster. Areas like optoelectronics, chemical biology, and green catalysis require reagents with well-understood profiles—nothing slows innovation like starting a project only to hit unpredictable roadblocks in early experiments. More research groups have taken to adopting this compound early in their screening protocols, citing confidence in both its chemical performance and the documentation from reputable suppliers.
Regulatory demands only increase as processes move closer to the market. Ingredients with clear impurity data, reliable certificates, and a strong track record simplify the regulatory journey. Direct feedback from industry colleagues points to a growing reluctance to accept last-minute substitutions for critical building blocks—consistency counts for more than small fluctuations in price or sourcing timeline.
In short, operating at the intersection of molecular innovation and practical manufacturing means counting on raw materials that deliver beyond the spec sheet. 4-Nitropyridine 1-Oxide has earned a place in the toolkit of experts building tomorrow’s breakthroughs. It’s a testament to patient development and feedback between science and industry—proving that even subtle changes at the atomic level can translate to outsized results in the real world.