3-Chloro-4-fluorobenzyl Bromide丨CAS 192702-01-5

3-Chloro-4-fluorobenzyl bromide is an important halogenated aromatic intermediate widely used in pharmaceutical and agrochemical synthesis. Its benzyl bromide functionality allows for nucleophilic substitution reactions, making it a versatile building block for the preparation of various bioactive compounds, including drugs, enzyme inhibitors, and receptor modulators. The presence of chlorine and fluorine on the aromatic ring can influence the electronic and steric properties of downstream molecules, enhancing binding affinity and metabolic stability. It is commonly employed in the synthesis of heterocyclic compounds, substituted amines, and other aromatic derivatives. Additionally, this compound serves as a key intermediate in medicinal chemistry research for structure–activity relationship (SAR) studies and in the development of novel agrochemicals with improved efficacy and selectivity.

The benefits of 3-Chloro-4-fluorobenzyl bromide are closely tied to its reactivity, stability, and structural versatility. The benzyl bromide moiety enables efficient and selective substitution reactions, allowing chemists to introduce a wide range of functional groups under mild conditions. The combined presence of chloro and fluoro substituents enhances the chemical stability, lipophilicity, and electronic properties of target molecules, which can improve pharmacokinetic and pharmacodynamic profiles in pharmaceuticals. Its high purity and well-defined reactivity make it suitable for reproducible synthesis and scalable production. Additionally, it facilitates rapid derivatization and structural modification, which is essential in drug discovery and agrochemical development for optimizing potency, selectivity, and metabolic stability.