TCI C1212 4-(Chloromethyl)benzoic Acid, CAS 1642-81-5, is a bifunctional aromatic building block carrying a reactive benzylic chloride and a carboxylic acid in a para relationship. The chloromethyl group alkylates amines, thiols, and oxygen nucleophiles, while the acid group can be activated for amide or ester formation, making the compound a convenient rigid linker. It is commonly applied to resin and surface functionalisation for solid-phase synthesis, as well as to conjugate and polymer preparation. AMI Scientific supplies a 25 g pack for research use; benzyl chloride derivatives are strong irritants, so weigh and transfer the material in a fume hood following the manufacturer's Safety Data Sheet.
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- Lu et al. (2007). Synthesis, characterization, and fluorescence of end‐functionalized polystyrene initiated by 4‐chloromethyl benzoic acid and ethyl 4‐chloromethyl benzenecarboxylate via ATRP. Journal of Applied Polymer Science doi:10.1002/app.25516
- Yan et al. (2020). The hemocompatibility of the modified polysulfone membrane with 4-(chloromethyl)benzoic acid and sulfonated hydroxypropyl chitosan. Colloids and Surfaces B: Biointerfaces doi:10.1016/j.colsurfb.2019.110769
- Takamori et al. (2021). In vitro display evolution of IL-6R-binding unnatural peptides ribosomally initiated and cyclized with m-(chloromethyl)benzoic acid. Biochemical and Biophysical Research Communications doi:10.1016/j.bbrc.2020.11.123
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