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2-(3-bromo-5-fluorophenyl)acetic acid; CAS No.: 202000-99-5; 2-(3-bromo-5-fluorophenyl)acetic acid. PROPERTIES: This bromo-fluoro-substituted phenylacetic acid features molecular formula C?H?BrFO? with molecular weight 251.05 g/mol. Exists as a crystalline solid. Soluble in polar aprotic solvents like DMF and DMSO. Melting point around 100-105 C. Shows IR absorption for carboxylic acid group. Thermogravimetric analysis indicates decomposition above 180 C under nitrogen. Store at 2-8 C in sealed containers. May cause skin irritation and eye damage. APPLICATIONS: As a brominated carboxylic acid, 2-(3-bromo-5-fluorophenyl)acetic acid is used in beta-blocker synthesis. The carboxylic acid group esterifies and amidates to form characteristic amide functionality. Also used in fluorescent probe synthesis, enabling conjugation via amide bond formation. In materials science, it enhances thermal stability in polyaryl acid polymers due to fluorine substituents.