5-Bromo-2-Chlorobenzaldehyde in Fungicide Synthesis
Technical Specifications and Purity Grades of 5-Bromo-2-chlorobenzaldehyde (CAS 189628-37-3) for Agrochemical Synthesis
In the competitive landscape of agrochemical intermediates, the quality of 5-bromo-2-chlorobenzaldehyde (CAS 189628-37-3) directly impacts downstream synthesis efficiency. As a halogenated benzaldehyde with both bromine and chlorine substituents, this compound serves as a versatile chemical building block for fungicide scaffolds. At NINGBO INNO PHARMCHEM CO.,LTD., we supply this intermediate with industrial purity levels tailored for large-scale manufacturing. Typical specifications include a purity of ≥98% by GC, with key impurities such as 5-bromo-2-chlorobenzoic acid and unreacted starting materials controlled to below 0.5%. However, for critical applications, we offer a high-purity grade (≥99%) where trace metals and water content are minimized. Please refer to the batch-specific COA for exact values.
One non-standard parameter we've observed in the field is the compound's tendency to form a slight pinkish hue upon prolonged storage under ambient light, even when purity remains within spec. This color shift, likely due to trace radical formation, does not affect reactivity in most coupling reactions but can be a concern for color-sensitive formulations. Our production team mitigates this through controlled crystallization and inert atmosphere packaging. For buyers seeking a drop-in replacement for existing suppliers, our product matches the key physical properties: a melting point range of 68-72°C and solubility profile in common organic solvents like toluene and dichloromethane. The table below compares our standard and high-purity grades.
| Parameter | Standard Grade | High-Purity Grade |
|---|---|---|
| Purity (GC) | ≥98.0% | ≥99.0% |
| Appearance | Off-white to pale yellow crystalline powder | White crystalline powder |
| Melting Point | 68-72°C | 69-71°C |
| Water (KF) | ≤0.5% | ≤0.2% |
| Single Impurity | ≤0.5% | ≤0.2% |
For agrochemical manufacturers, consistency in synthesis route outcomes is paramount. Our manufacturing process employs a regioselective bromination of 2-chlorobenzaldehyde, ensuring minimal dibromo byproducts. This translates to reliable performance in subsequent reactions, such as the formation of Schiff bases or Suzuki couplings, which are common in fungicide development. When evaluating bulk price options, consider that our tonnage-scale production reduces unit costs without compromising quality, making us a preferred global manufacturer for this bromochlorobenzaldehyde.
Preventing Oxidative Yellowing and Oiling-Out: Critical Handling and Storage Parameters for Bulk Quantities
Handling 5-bromo-2-chlorobenzaldehyde in bulk presents unique challenges that can affect yield and product integrity. Two common issues are oxidative yellowing and oiling-out during storage or processing. Oxidative yellowing occurs when the aldehyde group is exposed to air and light, leading to the formation of colored oxidation products. This is particularly noticeable in solid form; we've seen batches stored in translucent containers develop a yellow tint within weeks. To prevent this, we recommend storing the material in amber glass or opaque HDPE containers under a nitrogen blanket. For IBC totes and 210L drums, ensure a positive nitrogen pressure and keep temperatures below 25°C.
Oiling-out is another phenomenon that can plague bulk handling. This occurs when the crystalline solid partially melts or forms a liquid phase due to impurities or temperature fluctuations. Our field experience shows that 5-bromo-2-chlorobenzaldehyde with purity below 97% is more prone to oiling-out, especially if residual solvents or isomers are present. Even high-purity material can oil out if exposed to temperatures above 35°C for extended periods. In one instance, a customer reported that drums stored near a heating vent developed a sticky layer on the surface, complicating dispensing. To mitigate this, we control the crystallization process to produce a uniform, free-flowing powder and advise storing in a cool, dry environment. If oiling-out does occur, gentle warming to 40-45°C and stirring can often re-homogenize the material without degradation, but this should be done under inert gas.
For large-scale fungicide synthesis, these handling nuances are critical. Our quality assurance protocols include accelerated stability testing to ensure that each batch remains free-flowing and within color specifications for at least 12 months under recommended conditions. When you request a COA, you'll see data on loss on drying and residue on ignition, which are indirect indicators of oiling-out risk. We also offer custom packaging solutions, such as vacuum-sealed aluminum foil bags inside drums, for customers in humid climates. This attention to detail ensures that your organic synthesis processes run smoothly, whether you're producing dehydrozingerone analogs or trifluoromethylpyridine derivatives.
Role of 5-Bromo-2-chlorobenzaldehyde in Fungicide Scaffold Synthesis: From Dehydrozingerone Analogs to Trifluoromethylpyridine Derivatives
The search for novel fungicides has led researchers to explore halogenated benzaldehydes as key intermediates. 5-Bromo-2-chlorobenzaldehyde is particularly valuable in constructing bioactive scaffolds due to its dual halogen functionality, which allows for sequential cross-coupling reactions. A recent study on trifluoromethylpyridine compounds (see PMC article) highlights the importance of halogenated benzaldehydes in creating antifungal agents. While that study focused on dehydrozingerone derivatives, the synthetic logic applies directly: the aldehyde group serves as a handle for condensation reactions, while the bromine and chlorine atoms enable selective functionalization.
In our experience, 5-bromo-2-chlorobenzaldehyde is an excellent starting material for building phenoxytrifluoromethylpyridine derivatives, which showed superior antifungal activity in the referenced research. The chlorine atom at the 2-position can be displaced by phenols under basic conditions, while the bromine at the 5-position is primed for Suzuki coupling with trifluoromethylphenylboronic acids. This orthogonal reactivity is a significant advantage over non-halogenated or mono-halogenated benzaldehydes. For example, in the synthesis of compound 17 from the study, a similar bromochlorobenzaldehyde could be used to introduce the pyridine ring via a Chichibabin reaction, followed by further elaboration. Our product's high purity ensures that these multi-step sequences proceed with minimal side reactions, a crucial factor when scaling from lab to pilot plant.
Moreover, the 2-chloro-5-bromobenzaldehyde isomer we supply is specifically designed to avoid the regiochemical issues that plague other halogenated benzaldehydes. In fungicide scaffold synthesis, the position of halogens dictates the final compound's binding affinity to targets like succinate dehydrogenase. Our 5-bromo-2-chloro-benzaldehyde provides a consistent electronic and steric profile, enabling reliable structure-activity relationship studies. For agrochemical companies developing next-generation fungicides, this intermediate offers a strategic advantage. As discussed in our related article on selective cross-coupling optimization, the same principles of halogen selectivity apply across pharmaceutical and agrochemical applications, underscoring the versatility of this building block.
Industrial Packaging and Logistics: IBC Totes, 210L Drums, and Supply Chain Reliability for Drop-in Replacement
When sourcing 5-bromo-2-chlorobenzaldehyde for large-scale fungicide production, packaging and logistics are as critical as chemical specifications. At NINGBO INNO PHARMCHEM CO.,LTD., we offer standard packaging in 25kg fiber drums with inner PE bags, but for bulk orders, we provide 210L steel drums (net weight 200kg) and IBC totes (1000L, net weight 1000kg). These options are designed for safe transport and easy integration into your existing handling systems. Our drums are UN-rated for solid chemicals and come with tamper-evident seals. For customers requiring a drop-in replacement for products like Thermo Scientific H64438, we ensure that our packaging dimensions and labeling are compatible with automated dispensing systems. As detailed in our article on drop-in replacement strategies, we match not only the chemical specs but also the logistical footprint to minimize supply chain disruption.
Supply chain reliability hinges on inventory management and fast delivery. We maintain a safety stock of 5-10 metric tons in our Ningbo warehouse, allowing us to ship within 48 hours for standard orders. For larger contracts, we offer just-in-time delivery schedules with monthly or quarterly shipments. Our logistics team coordinates with major freight forwarders to provide competitive ocean freight rates to ports worldwide. While we do not handle regulatory compliance for specific regions, we ensure that all shipments are accompanied by proper documentation, including SDS and COA. For temperature-sensitive routes, we can arrange refrigerated containers to prevent any risk of melting or degradation, though the product is stable under normal shipping conditions.
We understand that for agrochemical manufacturers, consistency in supply is non-negotiable. That's why we offer long-term supply agreements with fixed pricing and volume guarantees. Our global manufacturer status means we control the entire production chain, from raw material sourcing to final packaging, reducing the risk of shortages. Whether you need a single drum for pilot trials or multiple IBC totes for commercial production, our team is equipped to handle your requirements. The 5-bromo-2-chlorobenzaldehyde market is niche, but our dedicated production lines ensure that we can scale up as your fungicide project moves from development to market.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for 5-bromo-2-chlorobenzaldehyde?
Our standard MOQ is 1kg for sample evaluation, but for commercial orders, we typically supply in 25kg drums. Bulk pricing is available for orders of 100kg or more. Contact our sales team for a tailored quote based on your annual volume requirements.
Can you provide a certificate of analysis (COA) for each batch?
Yes, every shipment includes a batch-specific COA detailing purity, appearance, melting point, water content, and impurity profile. We also offer additional testing upon request, such as residual solvents or heavy metals analysis.
Is 5-bromo-2-chlorobenzaldehyde stable during long-term storage?
When stored in sealed containers under nitrogen at 2-8°C, the product is stable for at least 12 months. Avoid exposure to light and moisture to prevent oxidative yellowing. We recommend retesting after 12 months if storage conditions are not ideal.
What are the typical applications of this compound in agrochemicals?
It is primarily used as an intermediate in the synthesis of fungicides, particularly those based on pyridine, pyrazole, or triazole scaffolds. Its dual halogen functionality allows for versatile cross-coupling reactions to build complex molecules.
Do you offer custom synthesis or derivatives of 5-bromo-2-chlorobenzaldehyde?
While our core business is the supply of the standard product, we can discuss custom synthesis projects for related halogenated benzaldehydes if volumes justify the development. Please inquire with our R&D team.
Sourcing and Technical Support
In the demanding field of agrochemical synthesis, having a reliable partner for key intermediates like 5-bromo-2-chlorobenzaldehyde can accelerate your R&D timelines and ensure production continuity. At NINGBO INNO PHARMCHEM CO.,LTD., we combine deep chemical expertise with robust manufacturing capabilities to deliver a product that meets the stringent requirements of fungicide scaffold synthesis. From preventing oxidative yellowing to ensuring seamless logistics, our team is committed to supporting your projects from gram-scale to ton-scale. For more information on how this intermediate fits into broader synthetic strategies, explore our resources on high-purity pharma intermediate applications. Ready to optimize your supply chain? Reach out to our logistics team today for comprehensive specifications and tonnage availability.