Description

1-Chloro-2,4-difluorobenzene (CAS No. 1435-44-5) is a high-purity halogenated aromatic compound with the molecular formula C₆H₃ClF₂. This colorless to pale-yellow liquid is widely utilized in organic synthesis, pharmaceutical intermediates, and agrochemical research due to its reactive chloro and fluoro substituents. Its IUPAC name, 1-chloro-2,4-difluorobenzene, reflects its precise structural configuration, ensuring unambiguous identification for regulatory and research purposes. With a boiling point of approximately 124-126°C and a density of ~1.39 g/cm³, it is compatible with standard laboratory handling protocols. Packaged in amber glass bottles or sealed drums under inert gas to prevent degradation, this compound is ideal for nucleophilic substitution reactions, cross-coupling catalysis, and as a building block for advanced materials. Available in ≥98% purity (GC), it includes detailed technical data sheets (TDS) and certificates of analysis (CoA) for quality assurance.

Properties

• CAS Number: 1435-44-5
• Complexity: 97.1
• IUPAC Name: 1-chloro-2,4-difluoro-benzene
• InChI: InChI=1S/C6H3ClF2/c7-5-2-1-4(8)3-6(5)9/h1-3H
• InChI Key: AJCSNHQKXUSMMY-UHFFFAOYSA-N
• Exact Mass: 147.9891341
• Molecular Formula: C6H3ClF2
• Molecular Weight: 148.54
• SMILES: C1=CC(=C(C=C1F)F)Cl
• Monoisotopic Mass: 147.9891341
• Synonyms: 1-Chloro-2,4-difluorobenzene, 1435-44-5, Benzene,1-chloro-2,4-difluoro-, DTXSID10162441, NSC 10254, DTXCID5084932, 604-365-2, ajcsnhqkxusmmy-uhfffaoysa-n, 2,4-Difluorochlorobenzene, 1-chloro-2,4-difluoro-benzene, Benzene, 1-chloro-2,4-difluoro-, NSC10254, MFCD00042569, 2,4-di-fluorochlorobenzene, 1chloro-2,4-difluorobenzene, SCHEMBL168149, SCHEMBL232459, SCHEMBL271959, SCHEMBL344241, CK2366, NSC-10254, SBB086605, 1-Chloro-2,4-difluorobenzene, 98%, AKOS006222508, AC-14080, AS-45893, DB-019939, C1830, CS-0110151, NS00120104, EN300-115836

Application

1-Chloro-2,4-difluorobenzene serves as a versatile intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) with fluorinated aromatic motifs. It is also employed in agrochemical research for constructing herbicides and pesticides due to its electron-withdrawing properties. Additionally, this compound finds use in material science for modifying polymer backbones and in organic electronics. Its reactivity in palladium-catalyzed cross-coupling reactions makes it valuable for constructing complex heterocycles.

Safety and Hazards

GHS Hazard Statements

• H226 (94.1%): Flammable liquid and vapor [Warning Flammable liquids]
• H315 (94.1%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (94.1%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (92.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 3 (94.1%)
• Skin Irrit. 2 (94.1%)
• Eye Irrit. 2 (94.1%)
• STOT SE 3 (92.2%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.