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HS Code |
971243 |
| Chemical Name | 3,5-Difluorophenylboronic Acid |
| Cas Number | 143209-24-5 |
| Molecular Formula | C6H5B F2O2 |
| Molecular Weight | 173.92 |
| Appearance | White to off-white solid |
| Melting Point | 101-104°C |
| Solubility | Soluble in methanol and DMSO |
| Purity | Typically ≥98% |
| Storage Conditions | Store at room temperature, protect from moisture |
| Inchi Key | BBYZCAZSYAGYMR-UHFFFAOYSA-N |
| Smiles | B(C1=CC(F)=CC(F)=C1)(O)O |
As an accredited 3,5-Difluorophenylboronic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle containing 5 grams of 3,5-Difluorophenylboronic Acid, with tamper-evident screw cap and printed safety labeling. |
| Shipping | 3,5-Difluorophenylboronic Acid is shipped in tightly sealed containers under dry, cool conditions to prevent moisture absorption and decomposition. The chemical is packaged according to regulatory standards for hazardous materials and labeled appropriately. Transport is typically via ground or air with documentation ensuring compliance with international shipping and safety guidelines. |
| Storage | 3,5-Difluorophenylboronic Acid should be stored in a tightly sealed container, protected from moisture and light. Keep it in a cool, dry, well-ventilated area, ideally at room temperature (15–25°C). Avoid exposure to strong oxidizing agents and incompatible materials. Store away from sources of ignition and ensure good laboratory practices are followed to prevent contamination and degradation of the chemical. |
Applications of 3,5-Difluorophenylboronic Acid in Industrial ManufacturingAs a direct manufacturer with expertise in organic synthesis, we supply 3,5-Difluorophenylboronic Acid for downstream sectors that demand high-purity boronic building blocks. Below, we detail how our material integrates into specialized industrial production pipelines, supporting compliance, precision in formulation, and high-value finished goods output. 1. Pharmaceutical Intermediate SynthesisOur 3,5-difluorinated boronic acid serves as a crucial coupling agent in Suzuki–Miyaura cross-coupling reactions, enabling downstream pharmaceutical manufacturers to build fluorinated heterocycles and aromatic groups commonly found in modern APIs (Active Pharmaceutical Ingredients). Most downstream clients employ this acid for late-stage diversification and fragment coupling steps in new drug synthesis, especially within custom and contract manufacturing where fluorinated motifs enhance metabolic stability. Downstream facilities typically implement this material at precise molar ratios dictated by each route’s process mass balance, closely monitored under GMP conditions. Industry compliance standards
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2. Agrochemical Active Ingredient SynthesisMajor crop protection manufacturers rely on difluorinated boronic acids to introduce persistent aromatic substituents into herbicide and fungicide molecules. In multi-step syntheses for novel agrochemicals, this acid is used in precise proportions during couplings that enhance active ingredient stability against environmental degradation. Our customers integrate tightly controlled lots to minimize variable impurities, ensuring compliance with both regional safety assessments and global active ingredient dossiers. Industry compliance standards
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3. Electronic Materials: Organic Semiconductor SynthesisProducers of organic electronic materials use our boronic building block when assembling conjugated backbones for small-molecule and polymer semiconductors. The precise fluorination pattern is leveraged in the controlled synthesis of high-mobility organic field-effect transistor (OFET) materials and OLED intermediates. Strict purity and batch consistency support manufacturing flows that demand minimum defect loading in functional layers. Usage ratios and step sequencing are calibrated based on the target device’s electronic requirements. Industry compliance standards
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4. Advanced Material R&D: Specialty PolymersResearch divisions and specialty polymer plants integrate our 3,5-difluorinated boronic acid into molecular design schemes for high-performance resins and engineering plastics. The fluoroaromatic motif imparts unique thermal and dielectric properties, making it valuable for custom polymers in aerospace and electronics. Formulators typically experiment with loading ratios based on the desired flexibility, rigidity, or solubility attributes, often scaling from lab trials to pilot lots under ISO compliance. Industry compliance standards
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5. Chemical Research: Fluorinated Ligand and Catalyst DevelopmentResearch laboratories in both academia and industrial innovation centers utilize our difluorinated boronic acid as a core fragment when constructing sophisticated ligands and organometallic complexes. These ligands underpin state-of-the-art catalytic systems for selective transformations, such as C–H activation and asymmetric hydrogenation, where the fluorinated arene component serves to modulate electronic and steric influences. Standard practice includes precisely measuring input relative to ligand precursor scales and monitoring downstream conversion using NMR or HPLC methods. Industry compliance standards
Typical usage ratio
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Years of operating in the chemical industry have given us a clear perspective on what customers and research chemists value most: reliability, consistency, and transparency. Our product, 3,5-Difluorophenylboronic Acid (model: 3,5-DFPBA), often finds its place at the very core of many pharmaceutical and material science projects. As a direct manufacturer, we oversee every phase, from the raw fluorinated materials selection through each stage of purification and quality control. We take care to maintain a controlled, reproducible process which yields a high-purity white powder, typically with assay values reaching above 98%. Even minor impurities can introduce unexpected variables into a synthesis, so we give regular attention to these checks. Maintaining such purity is not just a matter of pride—it makes the difference for researchers striving for reproducible, trustworthy results. Every batch reflects the precision and discipline of our team, from rooftop reactors to the dispatch floor.
Working with boronic acids can present challenges, especially those with multiple fluorine atoms in the aromatic ring. During synthesis, each fluorine atom changes the ring’s electronic environment, so the usual routes for boronic acid production rarely deliver consistent results. We’ve invested substantial research hours into refining our preparation of 3,5-Difluorophenylboronic Acid to minimize byproducts such as difluorinated impurities or ring-substituted isomers. Most manufacturers face issues with hydrolytic sensitivity and air instability of organoborons, but optimized conditions in our facilities—like an inert nitrogen blanket and rapid quenching steps—mean higher stabilities and shelf life in our bottled acid. Every run undergoes repeated titrations and chromatography checks, which brings us close to zero complaints from end users in recent years. That translates to lower rerun costs for customers, fewer last-minute delays, and better productivity in the lab.
3,5-Difluorophenylboronic Acid typically appears as a fine, free-flowing white powder. Our material has demonstrated remarkable stability in both short-term storage and prolonged warehouse conditions, especially if kept away from ambient moisture. With a melting point ranging from 153°C to 157°C, it provides good handling characteristics for both benchtop and bulk processing. Typical moisture content falls below 0.5%—this figure matters for those employing it in Suzuki-Miyaura cross-coupling, where water-sensitive transition metal catalysts play a key role. We ship in sealed HDPE containers, which guard the acid against unwanted exposure during transport across regions prone to humidity swings. Checking bulk samples year after year confirms physical and chemical parameters remain within tightly controlled limits. Such regular tracking is not added effort for us; it is the minimum one should expect from a responsible source.
Demand for this compound keeps rising, and we trace it back partly to its clear chemical advantages in coupling reactions. Medicinal chemists depend on 3,5-difluorinated aromatics in drug discovery to improve metabolic stability or selectively tune bioactivity. Boronic acids like this one allow swift construction of C-C bonds without complications that can surface with less reactive or less stable boronic building blocks.
Real-world laboratories often see a shift toward heterocycle functionalization, and we hear directly from clients developing kinase inhibitors, agrochemicals, and fluorinated polymers. Our customers routinely highlight how the unique electronic effects of the fluorine atoms in the 3 and 5 positions open up selectivity windows not available from mono- or non-fluorinated phenylboronic acids. Electrophilic partners such as halo-pyridines or chlorinated heterocycles respond better with our product, especially at lower catalyst loadings.
Another important point concerns its solubility: compared to some analogs, our 3,5-Difluorophenylboronic Acid does not tend toward problematic aggregation in polar aprotic solvents. That enables more concentrated reaction mixtures, cutting solvent and time costs for large-scale campaigns. The increased efficiency benefits small startups and global drug companies alike, as we have observed from routine feedback surveys.
The world of boronic acids is broad, with methyl, methoxy, nitro, and chloro substitutions each creating unique compounds tailored for different transformations. Fluorine, though, stands out not simply because it is an electronegative atom, but due to the subtle and broad-reaching changes it brings to a molecule’s profile. With both 3 and 5 positions fluorinated, this derivative exhibits a distinctive set of features. The increased electron withdrawal slightly alters pKa, which can influence the speed and outcome of complex coupling reactions, even at a scale so fine it becomes evident only under specific screening conditions.
Other isomers, like 2,4- or 2,6-difluorophenylboronic acid, display markedly different reactivities under the same conditions due to steric effects or altered resonance behavior. During in-house comparative studies, we have demonstrated how 3,5-difluoro substitution supports higher yields in certain Pd-catalyzed procedures on heterocycles. In some cases, researchers ran head-to-head reactions and reported not just improved overall yield, but lower formation of homo-coupling byproducts. The reliability of these improvements appears more pronounced in the hands of experienced catalytic chemists, who appreciate the nuanced impact of boronic acid structure.
We have compared product stability across a dozen analogous structures. Many mono-fluorinated or non-fluorinated boronic acids succumb to oxidative decomposition or loss of boronic function on prolonged storage. In contrast, our 3,5-Difluorophenylboronic Acid consistently retained full activity for months without refrigeration, as long as standard packaging protocols were maintained. Customers processing kilo lots for process development value the confidence this brings, since fewer surprises arise down the line during QA/QC checks.
Researchers often raise questions about the scalability of advanced boronic acids. Our capacity for 3,5-Difluorophenylboronic Acid production has expanded in line with the needs of pharmaceutical and materials innovation. We established parallel lines for both multi-kilo campaigns and lot sizes more suited to academic screening—the same overarching approach underpins both operations, so there is no shift in product profile regardless of scale. The raw materials are sourced through long-standing local partnerships, minimizing vulnerability to upstream disruptions. Automated monitoring and real-time analytics guide our reaction controls, catching deviations at the earliest possible stage. Quick, direct responses to changing order sizes have helped many customers bridge the gap between bench scale and pilot plant demands.
Supply chain resilience has become increasingly vital, especially after the disruptions in recent years. From fluorinated aromatics to custom reagents, we keep a minimum safety stock on hand and keep lead times competitive. Our logistics model skips extra handling steps found with many middlemen, so material goes from reactor to shipment with minimal lag. Based on recent customer testimonials, rapid direct-to-lab delivery not only saves time but also reduces temperature excursions and accidental exposure compared to long, multi-leg transport routes. Each logistics partner is vetted for careful handling of air- and moisture-sensitive chemical intermediates.
All manufacturers hold the responsibility of handling boronic acids in a way that safeguards both people and the environment. Over the last decade, we have refined both procedural and waste treatment approaches to meet evolving regulatory standards around air quality, water discharge, and solvent handling. Our process engineers regularly revisit reactor protocols to drive down emissions, and all floor staff receive training on spill and contamination management. Although boronic acids are not the most hazardous organic chemicals, safe work habits help avoid skin and eye contact as well as minimize environmental trace exposure.
We favor closed-system handling and rigorous labeling, so all personnel work with clear awareness of contents and hazards. Routine maintenance of exhaust and filtration systems ensures that airborne boron emissions stay well below regulated limits. Waste fractions with boron content are collected in separate containers and processed by licensed sources familiar with both local and international disposal standards. By controlling each step in the lifecycle—from material entry to final packaging and shipment—risk stays as low as possible. We also encourage customers to request certificates of analysis and safety data at any order volume, supporting a culture of transparency.
Some modern research environments require more than standard reagents. As chemists move from library synthesis toward customized late-stage intermediates, the precise electronic and steric characteristics of each building block can become critical to intellectual property claims and patent strategies. Our technical support team often fields requests for tailored lots—variation in counterions, isotopic labeling, or custom packaging. In recent years, we supported multiple projects developing protected or functionalized boronic acids where the underlying 3,5-difluorosubstitution formed the backbone of key patent claims.
Direct handling of technical documentation and NDA relationships adds reassurance to customers that data and processes remain secure. We do not out-license core production, so every molecule offered for sale originates from our facilities and never passes through untracked intermediaries. This guarantees a consistent product story from raw material all the way to final project reporting. From startup biotech to major pharma, unique delivery formats or quality documentation requests are handled directly with technical staff—everything remains confidential and trackable at each step.
Chemistry research rests on reproducibility. For 3,5-Difluorophenylboronic Acid, seeing a laboratory result fall in line with prediction on every batch is more than desired—it’s expected. Our analytical team runs HPLC, NMR, and IR confirmation on every batch, not just the first or last. We maintain libraries of spectral reference data stretching back two decades, so trends or batch anomalies can be picked up before a bottle leaves the warehouse.
Final products get checked again just prior to shipment, and customers routinely audit these reports before critical scale-ups. This level of transparency, supported by our in-house instruments, leads to direct feedback—positive and negative—from users who rely on knowing that every bottle performs the same way as the last. With highly substituted aromatics like this, such regular analytic confirmation lowers both wastage and risk across the board.
Working with 3,5-Difluorophenylboronic Acid highlights the role that direct feedback and customer engagement play in continual improvement. Chemists working at the forefront of new materials or medicines regularly offer insights into novel transformation conditions, improved work-up steps, or even safety tweaks that help fine-tune our product formulations and delivery schedules. As direct suppliers, we try to remain two steps ahead by anticipating the changing landscape of coupling catalysis, greener chemistries, and complex multistep syntheses. Real-time dialogue with research teams helps us adapt packaging, batch sizes, or even recommend alternative reaction setups when unusual requests arise. Every shared project adds to our understanding of the nuances separating a mediocre product from one that exceeds expectations in the most demanding contexts.
We also prioritize support channels—whether face-to-face technical workshops, digital document handovers, or troubleshooting sessions with process chemists scaling from grams to kilograms. Bridging the experience between hands-on manufacturing chemists and lab researchers brings practical tips that go beyond textbook recommendations. The shared expertise ultimately supports innovation, reducing bottlenecks for those on timelines measured not in months but days or weeks.
Many challenges and opportunities arise for those exploring the future of boronic acid chemistry. As research and markets drive increased utilization of fluorine-containing building blocks, demand for consistently reliable, scalable, and well-documented 3,5-Difluorophenylboronic Acid will only grow. Our experience as manufacturers shapes a deeper understanding of what such compounds truly offer: precise control in cross-coupling, a path to advanced agrochemicals or pharmaceuticals, and real-world stability during hectic production cycles.
Developing robust routines to create and supply this material directly to those who need it most forms the backbone of our daily operations. Each improvement, every tweak to process and logistics, every feedback session with a chemist helps refine our approach. We do not take shortcuts; every bottle reflects hundreds of combined years of learning, adaptation, and pride in supplying critical intermediates to innovators across the world.
The path from raw fluorinated aromatics to pure 3,5-Difluorophenylboronic Acid is neither short nor simple. Still, it remains a journey that rewards careful work, attention to the details that matter, and an ongoing dialogue between manufacturing chemists and those building tomorrow’s breakthroughs. Our ongoing goal is always to offer a reliable cornerstone in whatever ambitious projects our customers choose to pursue next.