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HS Code |
810860 |
| Chemical Name | 2,5-Dichloro-1H-imidazo[4,5-b]pyridine |
| Molecular Formula | C6H3Cl2N3 |
| Molecular Weight | 188.02 g/mol |
| Cas Number | 41440-31-1 |
| Appearance | Off-white to pale yellow powder |
| Melting Point | 248-252°C |
| Solubility | Slightly soluble in DMSO, insoluble in water |
| Purity | Typically ≥98% |
| Storage Conditions | Store at room temperature, in a dry, ventilated place |
| Smiles | C1=CN2C(=NC=C1Cl)N=CN2Cl |
As an accredited 2,5-Dichloro-1H-imidazo[4,5-b]pyridine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The 5-gram chemical is supplied in a tightly sealed amber glass bottle with a tamper-evident cap, labeled for laboratory use. |
| Container Loading (20′ FCL) | 20′ FCL loads approximately 12 metric tons of 2,5-Dichloro-1H-imidazo[4,5-b]pyridine, packed in sealed fiber drums or bags. |
| Shipping | 2,5-Dichloro-1H-imidazo[4,5-b]pyridine is shipped in tightly sealed containers to prevent contamination and moisture absorption. The packaging complies with hazardous materials regulations if applicable. It is transported under controlled conditions, typically at room temperature, with appropriate labeling to ensure safe handling during transit. Documentation accompanies each shipment for regulatory compliance. |
| Storage | Store 2,5-Dichloro-1H-imidazo[4,5-b]pyridine in a tightly sealed container, in a cool, dry, and well-ventilated area away from sources of moisture and incompatible substances such as strong oxidizers. Protect from light and avoid prolonged exposure to air. Handle using appropriate personal protective equipment and keep away from food and drink. |
| Shelf Life | 2,5-Dichloro-1H-imidazo[4,5-b]pyridine should be stored tightly sealed, protected from light and moisture; shelf life is typically 2–3 years. |
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Purity 98%: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine with purity 98% is used in pharmaceutical intermediate synthesis, where it ensures high product yield and minimal impurity formation. Melting Point 230°C: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine with a melting point of 230°C is used in high-temperature reaction processes, where it provides thermal stability and consistent reactivity. Molecular Weight 204.02 g/mol: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine with molecular weight 204.02 g/mol is used in medicinal chemistry research, where it allows precise formulation and dosing accuracy. Particle Size <20 µm: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine with particle size below 20 µm is used in catalyst preparation, where it enhances surface area and catalytic efficiency. Stability up to 100°C: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine with stability up to 100°C is used in storage and transport, where it ensures safe handling and maintains chemical integrity. Solubility in DMSO 10 mg/mL: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine soluble in DMSO at 10 mg/mL is used in biological assay development, where it enables high-concentration stock solutions for reliable screening. HPLC Purity ≥99%: 2,5-Dichloro-1H-imidazo[4,5-b]pyridine with HPLC purity of at least 99% is used in analytical method validation, where it assures data reproducibility and accurate quantification. |
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Experience with 2,5-Dichloro-1H-imidazo[4,5-b]pyridine goes beyond seeing it as a commodity chemical. As the producer, each batch passing through the reactors in our plant goes through monitoring and measurable adjustment at nearly every stage. Specializing in heterocycles for over a decade, we've seen this compound rise in demand for one reason: reliable, consistent performance where sensitive synthesis steps call for high precision.
Running this synthesis always presents a challenge. You work with chlorination at early stages, manage reaction temperatures tightly, and plan for purification under strict limits that match or exceed pharmaceutical standards. We've had days where only slight shifts in a temperature profile could tip an entire batch, a reminder that process control isn’t optional. Observing the solid forming during isolation — its off-white color and fine crystalline structure — is more than routine; it is the visible stamp of dozens of decisions by chemists who pay attention. Each specification, including material purity and trace impurity levels, tells a story about how we run this production line and not just a technical requirement for a document.
Feedback from partners in pharmaceuticals and agriculture puts purity at the front of every conversation. Customers working with this intermediate need confidence the content aligns with tightest global standards and remains repeatable. Here, purity isn’t just a number on a lot sheet. We test for main compound content using HPLC and inspect for side-products with GC-MS. The results aren’t abstract metrics. They directly predict how smooth the next synthetic step will be. For researchers and process engineers, encountering less than optimal purity leaves behind waste, troubleshooting, and higher operational costs.
Particle size has a habit of getting overlooked by those outside the factory setting. In our experience, handling and blending workflows improves substantially with a consistent particle cut. Finer powders demand a different approach to dust control and transfer. In pilot runs, teams often notice the difference in material flow within just a few hours. The way the product pours and disperses influences workplace safety and downtimes. Repeatedly, handling experience has shown that small deviations at the production line get amplified in scale-up or formulation steps downstream.
Protection and containment run through every aspect of this chemical’s manufacture. At chlorination steps, ventilation systems and third-party exposure monitoring have become routine. Regular training helps operators spot problems before they escalate, and documentation surrounding spills or near-misses keeps us alert. Shipping teams pay close attention to packaging requirements so the finished product reaches customers intact and unchanged. Working directly with hazardous starting materials, we gain an appreciation that safety procedures save time, money, and health — valuable lessons after seeing how quickly incidents can spiral from lapses.
For years, our main customers were research labs and pilot-scale innovators. Now, with increased regulatory scrutiny, large pharmaceutical and crop-protection firms come straight to us for a direct supply chain. They want answers to real questions: origin of raw materials, traceability of all input streams, environmental impact of our waste handling, and the possibility of variant forms. Each discussion reshapes priorities across our production team.
The reason quality-conscious buyers care about source ties back to predictable reactivity. Imidazopyridine core structures play a major role in drug and agrochemical design, often as scaffolds or protected intermediates. Any deviation in the false positive or negative direction can set back months of development, especially where patent-critical syntheses are concerned. We’ve seen what happens when a customer switches to a cheaper supplier for a key intermediate. Purity dips, side product spikes, and suddenly yields drop, costing tens of thousands across the campaign. Lessons learned this way sharpen our drive for strict controls.
With each passing year, standards for purity, trace profiling, and documentation move higher. Agencies scrutinize impurity profiles, not just declared content. Manufacturers like us develop new analytical routines in response. Our customers notice faster turnaround on requests for method validation, ISO documentation, and trace impurity reporting. The investment in better QC instrumentation pays off when a critical inspection comes — not as a checkmark but with quantified, searchable batch records. Confidence in a supply chain translates directly into uninterrupted process campaigns for end-users.
Greater regulatory focus on trace byproducts led us to restructure waste handling. Several years ago, environmental regulators flagged legacy solvent management as an area for improvement. Shifting to closed-loop solvent recovery not only cut waste but lowered costs, proving that upgraded infrastructure brings tangible benefits. Long-term contracts now hinge on these improvements. Producers that ignore such shifts face rising costs in oversight and rejection by clients who focus on sustainability.
Working with a range of heterocyclic building blocks, we track subtle but significant differences in synthetic intermediates. Some similar dichlorinated imidazopyridines often show reduced reactivity in N-arylation, hindering downstream steps. Our 2,5-dichloro variant, produced at scale, demonstrates robust stability across a range of solvent and temperature conditions. Process engineers report smoother condensations and less off-gassing, especially compared to others like 2,6-dichloro isomers. The finer point isn’t just the additional chlorine position. It comes down to how carefully temperature ramps and quench sequences are managed, controlling byproduct development in the ring system. These small distinctions become magnified in kilo-scale reactions, where savings add up.
Every time a customer tests competing samples, feedback focuses on material cleanliness, ease of dissolution, and batch uniformity. New entrants to the field tend to supply mixed crystal forms, or product that exhibits off-colors indicative of incomplete purification. Those lessons, sometimes hard-won, lead experienced chemists to favor direct-from-manufacturer sources where process knowledge runs deep. Arguments about price quickly yield to consistency and technical support.
Operating as more than just a chemistry shop, our technical support bridges laboratory formulation with bulk-manufacturing targets. End users often share their goals — extending shelf-life, minimizing impurities for regulatory dossiers, or increasing loading in formulation steps. Several times, troubleshooting starts at our end, not theirs. For example, a past customer confronted crystallization issues during formulation. Upon review, we traced the root cause to a slight increase in trace chloride. Adjustments in our wash procedure reduced chloride carry-over, restoring customer confidence and improving final product performance.
Providing more than logistics, a manufacturer who shares data, supports scale-up trials, and responds to practical realities of chemical process engineering becomes a partner, not just a source. As formulation technologies evolve — be it spray-dried dispersions, salt screening, or micro-encapsulation — close conversation leads to improvements both for us and the end-user.
Trends move quickly, and being a manufacturer means adapting plant throughputs and supply chain logistics on short notice. Two years ago, an abrupt surge in demand from biotech clients forced a rethink of reactor capacity and purification schedules. We optimized unit operations, merged parallel batch protocols, and raised finished product lead times by less than two weeks. That episode reinforced a philosophy: in chemical production, adaptability wins over theoretical optimization. Customers appreciate regular, open communication about batch timelines instead of blanket reassurances. Supply certainty matters more than market theory.
Scaling up also presents lessons in plant bottlenecks and material sourcing. Our team identified process steps where downtime occurred most, namely solvent recovery and intermediate crystallization. Focused investment in filtration infrastructure reduced these delays, preventing backlogs in both raw material intake and product shipment. The difference shows itself in reduced batch release times — measurable, consistent, and valuable during seasonal market spikes.
Having walked the lines, the difference between manufacturer-supplied and unrelated third-party chemical is clear. With factory-direct material, any concern about formulation compatibility, impurity matching, or batch identity gets traced to source — and resolved quickly. Production adjustments or tailored specifications don’t require layers of negotiation, just direct engineering dialogue. Repeated feedback from process chemists and analytical managers: quick answers matter most, especially during new campaign launches.
Working hands-on with 2,5-Dichloro-1H-imidazo[4,5-b]pyridine, considerations shift beyond specification sheets. Sourcing concerns focus on lead times, consistent inbound delivery, and regulatory compliance assurance. As long-standing producers, we shoulder the task of keeping full documentation and lot histories accessible for audits. That transparency shortens problem-solving cycles for everyone in the chain.
Progress in the field brings more than volume increases. The market now requests materials with fewer residual solvents, tighter particulate standards, and greater clarity on origin. Our R&D efforts increasingly steer toward greener routes. Recent pilot runs show that adopting alternative chlorination reagents reduced vented emissions without sacrificing throughput. While not all process changes pay immediate dividends, long-term reliability and risk management steer new investments.
Collaborating with academic consortia, we support testing for low-metal contaminant routes, offering co-development for customers with deep technical requirements. These research links provide firsthand insight into market needs as researchers search for intermediates with verified trace profiles — particularly critical for advanced pharmaceutical syntheses. As these projects mature, new feedback circles back into our production protocols, closing the loop between lab innovation and plant operations.
Disposal and recovery often go unmentioned yet define environmental footprint. Decades manufacturing dichloro-imidazopyridines, we measure and audit waste streams quarterly, adjusting neutralization tanks and solvent washing priorities. An unplanned release ten years ago led to a complete overhaul of secondary containment, which reduced risks of environmental fines and reassured regional regulators.
Green production isn’t just a standard to reach — it’s an ongoing process shaped by small, daily improvements. Recovery rates for byproduct chlorides, for example, rose steadily as new ion-exchange and distillation systems were added. Looking at cost: the return on environmental upgrades mirrors the return on downtime reduction. Fewer outages, safer workplaces, and improved relations with neighbors and authorities each justify choices often overlooked by outside observers.
Over time, experience proves itself. Young chemists joining our plant often expect modern automation to solve every issue. Veteran operators remind them it’s as much about attention — monitoring crystal growth in real time, listening for changes in vacuum pump noise, checking clarity at each filtration. This “feel” matters especially on challenging intermediates. Tolerance for error decreases with every campaign, and handoffs between shifts turn into checkpoints for process improvement. Each completed lot carries fingerprints of this expertise. Stable supply, technical agility, and deep process memory set primary manufacturers apart.
As demand for 2,5-Dichloro-1H-imidazo[4,5-b]pyridine grows, we continue investing in frontline observation, process review, and staff know-how. Our role as the actual producer means facing problems directly, solving them quickly, and sharing lessons learned with our customers. Over years, this shared expertise gives buyers more than just a product — it builds trust, reliability, and better outcomes for all sides of the partnership.
On each production run, stakes run high for quality, delivery, and technical assurance. Manufacturing 2,5-Dichloro-1H-imidazo[4,5-b]pyridine at scale involves continuous improvement, new investments, feedback-driven adjustments, and sometimes hard lessons learned from day-to-day reality. Meeting advanced purity specifications, supporting technical problem-solving, and contributing to sustainable industry standards mean more than just hitting targets — those goals define who we are as long-term partners in the global chemicals market.
Trust in our process comes from openness, a willingness to engage with practical challenges, and the energy to improve with every batch. That commitment sets the true manufacturer apart, making each delivery a testament to ongoing dedication and hard-earned expertise.