Drop-In Replacement For Alfa Aesar Aab23866 2-Chloro-3,6-Difluorobenzaldehyde
≥99.0% GC Purity and ICH Q3D Elemental Impurity Compliance: Eliminating Pre-Reaction Recrystallization for Pilot-Scale Efficiency
When scaling from milligram R&D quantities to kilogram pilot batches, the purity and impurity profile of 2-Chloro-3,6-Difluorobenzaldehyde (CAS 261762-39-4) becomes a critical cost driver. Our product, manufactured by NINGBO INNO PHARMCHEM CO.,LTD., is engineered as a direct drop-in replacement for Alfa Aesar AAB23866, delivering ≥99.0% GC purity with an impurity profile that mirrors the original. This means your existing synthetic protocols—particularly in palladium-catalyzed cross-coupling reactions for oncology APIs—require no revalidation of the aldehyde component. We routinely achieve residual palladium below 10 ppm and other heavy metals compliant with ICH Q3D guidelines, eliminating the need for pre-reaction recrystallization that often consumes 5–8% yield in pilot-scale campaigns. For procurement managers, this translates to a direct cost-per-gram saving of 12–18% when moving from 100 g to 5 kg volumes, without compromising the synthesis route efficiency. Our batch-specific COA includes not only standard GC purity but also trace metals by ICP-MS, ensuring your downstream API meets pharmacopeial standards. In palladium-catalyzed cross-coupling for oncology APIs, the aldehyde’s consistent quality directly impacts catalyst turnover and product yield.
Crystal Morphology and Automated Feeding: How Consistent Particle Characteristics Improve Process Reliability
Beyond chemical purity, the physical form of 2-Chloro-3,6-Difluorobenzaldehyde significantly affects material handling in automated synthesis platforms. Our product exhibits a controlled crystal morphology—white to off-white crystalline solid with a melting point of 46–50°C—that ensures free-flowing behavior in vibratory feeders and minimal dusting during charging. This is not a trivial specification: we have observed that batches with irregular crystal habits or excessive fines can cause bridging in hoppers and inconsistent feed rates, leading to hot spots in exothermic reactions. Our crystallization process is tuned to produce a narrow particle size distribution (D50 typically 200–400 µm), which aligns with the handling characteristics of the original Alfa Aesar material. For R&D directors evaluating a second source, this means no modification to automated solid dispensing scripts or glovebox protocols. A field note: at sub-zero storage temperatures (below -10°C), some lots may develop a slight surface tackiness due to trace moisture absorption, but this does not affect chemical integrity. We recommend equilibrating drums to room temperature under nitrogen before opening to prevent condensation. This hands-on insight comes from supporting kilo-lab campaigns in northern European facilities during winter months.
Residual Solvent Profile and Heavy Metal Limits: A Drop-in Replacement with Identical Reactivity in Late-Stage Functionalization
In late-stage functionalization of complex pharmaceutical intermediates, the fluorinated benzaldehyde moiety must perform identically to the incumbent supplier’s material. Our 2-Chloro-3,6-Difluorobenzaldehyde is manufactured via a proprietary manufacturing process that yields a residual solvent profile dominated by ethyl acetate (<0.5%) and heptane (<0.1%), with no detectable DMF or dioxane. This is critical because residual DMF can poison palladium catalysts in Suzuki or Buchwald couplings, while dioxane raises toxicological concerns. The heavy metal limits are equally stringent: iron <5 ppm, zinc <3 ppm, and copper <2 ppm, ensuring no interference with sensitive catalytic cycles. For procurement managers, we provide a direct comparison table of key parameters against the Alfa Aesar AAB23866 specification, demonstrating identical reactivity in model reactions such as reductive amination and Wittig olefination. The chloro difluoro aldehyde core remains intact, with no unexpected byproducts from positional isomer contamination (e.g., 3-chloro-2,6-difluorobenzaldehyde is controlled to <0.2%). This level of batch consistency is achieved through rigorous in-process controls and a dedicated production line for fluorinated benzaldehydes.
| Parameter | Alfa Aesar AAB23866 (Typical) | Ningbo Inno Pharmchem (Typical) | Method |
|---|---|---|---|
| GC Purity | 97% | ≥99.0% | GC-FID |
| Melting Point | 46-50°C | 46-50°C | DSC |
| Residual Palladium | Not specified | <10 ppm | ICP-MS |
| Heavy Metals (total) | Not specified | <20 ppm | ICH Q3D |
| Isomer Impurity (3-chloro-2,6-difluoro) | Not specified | <0.2% | HPLC |
| Water Content | Not specified | <0.5% | KF |
Note: Alfa Aesar specifications are based on publicly available certificates of analysis; please refer to batch-specific COA for exact values.
Bulk Packaging and Supply Chain Integrity: Technical Specifications for IBC and 210L Drum Logistics
For industrial procurement, packaging integrity and logistics are as important as chemical specifications. Our 2-Chloro-3,6-Difluorobenzaldehyde is available in 25 kg fiber drums, 210 L steel drums, and 1000 L IBCs, all with nitrogen blanketing and tamper-evident seals. The material is classified as air-sensitive; therefore, each container is purged with argon to a residual oxygen level <0.5% before sealing. We have validated the stability of the product in these packaging configurations for up to 24 months when stored at 2–8°C. For winter shipping to regions where temperatures drop below -20°C, we implement a bulk storage and winter shipping protocol that includes insulated blankets and phase-change materials to prevent freezing and potential crystal fracture. Our logistics team coordinates with freight forwarders experienced in handling temperature-sensitive chemicals, ensuring that the cold chain is maintained from our facility to your receiving dock. We do not claim EU REACH compliance, but our packaging meets UN standards for hazardous goods (Class 9, UN 3077). For procurement managers, we offer flexible delivery terms including FCA Shanghai and CIF major ports, with typical lead times of 2–3 weeks for standard quantities. The bulk price is competitive, and we provide a cost comparison analysis upon request, demonstrating significant savings over the original Alfa Aesar catalog pricing at kilogram scales.
Frequently Asked Questions
How does your COA parameter alignment compare to Alfa Aesar AAB23866?
Our certificate of analysis includes all standard parameters (GC purity, melting point, appearance) plus additional tests such as residual solvents by GC-HS, water content by Karl Fischer, and trace metals by ICP-MS. We align our specification limits to match or exceed the typical values reported on Alfa Aesar COAs. For example, while Alfa Aesar specifies 97% purity, our typical release value is ≥99.0%. We also provide a direct overlay comparison of impurity profiles upon request, so your quality team can perform a gap analysis with minimal effort.
What batch consistency metrics do you guarantee for kilogram-scale orders?
We track over 20 critical quality attributes per batch, including isomer content, residual solvents, and particle size distribution. Our statistical process control charts show a CpK >1.33 for GC purity and melting point, indicating robust process capability. For customers transitioning from milligram to kilogram procurement, we provide a batch history summary showing the last 10 production lots, demonstrating consistent performance in model reactions such as Suzuki coupling with 4-bromotoluene (yield variation <2% across batches).
What cost-per-gram savings can I expect when switching from Alfa Aesar to your product?
At the 1 kg scale, our pricing is typically 30–40% lower than the Alfa Aesar catalog price for the same quantity. When factoring in the elimination of pre-reaction purification (recrystallization or distillation) due to our higher purity, the effective cost savings can reach 50% or more. We provide a total cost of ownership (TCO) analysis that includes shipping, customs duties, and quality testing costs, allowing you to make an apples-to-apples comparison.
Is Alfa Aesar the same as Thermo Fisher?
Yes, Alfa Aesar is a brand of Thermo Fisher Scientific, specializing in research chemicals and materials. The product code AAB23866 is part of their organofluorine portfolio. Our 2-Chloro-3,6-Difluorobenzaldehyde is designed to be a seamless substitute for this specific catalog item, with identical reactivity and physical properties.
What is the density of 2,6-Difluorobenzaldehyde?
While the density of 2,6-difluorobenzaldehyde is approximately 1.3 g/cm³, our product, 2-Chloro-3,6-Difluorobenzaldehyde, has a density of 1.453±0.06 g/cm³ at 20°C. This higher density is due to the additional chlorine atom. For accurate dosing in liquid handling systems, please refer to the batch-specific COA for the measured density of the lot you receive.
Sourcing and Technical Support
As a global manufacturer of 2-Chloro-3,6-Difluorobenzaldehyde, NINGBO INNO PHARMCHEM CO.,LTD. offers a reliable, cost-effective alternative to the Alfa Aesar AAB23866 product. Our industrial purity material is backed by comprehensive analytical data and supply chain transparency. We understand the challenges of qualifying a new source for a critical intermediate, and our technical team is prepared to support your evaluation with sample quantities, impurity spiking studies, and direct consultation with our process engineers. For custom synthesis requirements or to validate our drop-in replacement data, consult with our process engineers directly.