Chemical Identity and Key Properties

2-Chloro-4-fluorobenzylamine (Aladdin SKU: C124426) is a difunctionalized aromatic primary amine bearing both a chlorine substituent at the ortho position and a fluorine substituent at the para position of the benzyl ring. Its molecular formula is C₇H₇ClFN, combining the reactivity of a primary benzylic amine with the electronic and steric influences of two distinct halogen substituents.

The presence of electron-withdrawing halogens on the aromatic ring modulates the basicity and nucleophilicity of the amine group compared to unsubstituted benzylamine. The ortho-chloro and para-fluoro substitution pattern is particularly valued in medicinal chemistry because these substituents can fine-tune binding interactions with biological targets and improve metabolic stability of derived compounds.

Note: Specific physical constants such as boiling point, density, refractive index, and exact pKa values are not confirmed in the available source material. Researchers should consult the official Aladdin product datasheet for C124426 for verified specification data.

Synthetic Applications and Use as a Building Block

The primary amine group of 2-Chloro-4-fluorobenzylamine makes it highly versatile for a broad range of synthetic transformations commonly employed in research laboratories:

• Amide bond formation: Reaction with activated carboxylic acids (acid chlorides, anhydrides, or via coupling reagents such as EDC/HOBt) yields N-benzyl amides that serve as key pharmacophores in drug candidates.
• Reductive amination: Condensation with aldehydes or ketones followed by reduction affords secondary and tertiary amines for structure–activity relationship (SAR) studies.
• Urea and carbamate synthesis: Reaction with isocyanates or chloroformates provides ureas and carbamates, which are privileged scaffolds in medicinal chemistry.
• Heterocycle construction: The amine can participate in cyclization reactions to furnish benzimidazoles, quinazolines, benzodiazepines, and related nitrogen-containing heterocycles.
• Palladium-catalyzed cross-coupling: The aryl chloride can serve as a coupling partner in Suzuki, Buchwald-Hartwig, or other transition-metal-catalyzed reactions, enabling further diversification of the scaffold.

The dual halogen handles allow orthogonal functionalization strategies, making C124426 especially attractive for parallel synthesis and library generation in drug discovery programs.

Safe Handling, Storage, and Waste Disposal

Personal Protective Equipment (PPE): When working with 2-Chloro-4-fluorobenzylamine, wear chemical-resistant gloves (nitrile or neoprene recommended), a laboratory coat, and safety goggles. Primary aromatic amines can be skin and mucous-membrane irritants; avoid inhalation of vapors or aerosols.

Engineering Controls: Handle the compound in a well-ventilated fume hood. Ensure adequate local exhaust ventilation to maintain exposure below any applicable occupational exposure limits.

Storage: Store in a tightly sealed container in a cool (typically 2–8 °C or as specified on the datasheet), dry area away from heat sources, oxidizing agents, strong acids, and strong bases. Protect from light if photosensitivity is indicated on the product label.

Spill Management: In case of spillage, absorb with an inert material (e.g., vermiculite or dry sand), place in a labeled waste container, and dispose of according to local environmental regulations.

Waste Disposal: Dispose of as chemical waste in compliance with national and local regulations. Do not pour down the drain or release to the environment.

Important: Always consult the current Safety Data Sheet (SDS) for C124426 before use. SDS information supersedes general guidance provided here.

Quality, Purity, and Procurement Considerations

For research applications, the purity of 2-Chloro-4-fluorobenzylamine is a critical parameter that directly affects experimental reproducibility and the quality of downstream synthetic products. Common analytical techniques used to assess purity include:

• Gas Chromatography (GC): Provides accurate purity assessment for volatile liquid amines.
• ¹H and ¹³C NMR Spectroscopy: Confirms structural identity and detects regioisomeric impurities.
• High-Performance Liquid Chromatography (HPLC): Useful for detecting non-volatile or polar impurities.

Aladdin's C124426 is offered as a research-grade reagent. Researchers requiring specific purity thresholds (e.g., ≥97%, ≥98% GC) should verify the current certificate of analysis (CoA) available on the product page or upon request from Aladdin Scientific customer service.

When procuring for multi-step synthesis or high-value screening campaigns, consider ordering sufficient quantity to complete the entire study from the same lot, minimizing batch-to-batch variability.