4-bromo-2-fluoro-3-methylaniline; CAS No.: 1540204-53-2; 4-bromo-2-fluoro-3-methylaniline. PROPERTIES: 4-bromo-2-fluoro-3-methylaniline is a crystalline solid with a molecular weight of 225.0 g/mol. It typically exhibits a melting point in the range of 45-48 C and limited water solubility, though it dissolves readily in organic solvents such as methanol, ethanol, and dichloromethane. The compound contains reactive functional groups including an amino group, bromine substituent, fluorine substituent, and a methyl group, which contribute to its chemical versatility. For optimal storage, it should be kept in a tightly sealed container at temperatures below 20 C, preferably under inert atmosphere to prevent potential oxidation of the amine functionality. Safety considerations include wearing appropriate protective clothing, gloves, and eye/face protection to minimize exposure risk. The compound may cause eye irritation and skin irritation, and in case of accidental ingestion, immediate medical attention is advised. APPLICATIONS: 4-bromo-2-fluoro-3-methylaniline serves as a valuable intermediate in the synthesis of various pharmaceuticals, particularly in the development of targeted kinase inhibitors for cancer therapy. Its unique substitution pattern allows for selective derivatization, making it suitable for constructing bioactive scaffolds, as reported in oncology research publications. In materials science, the compound functions as a building block for certain types of conductive polymers, where the electron-donating methyl group and electron-withdrawing bromine and fluorine substituents create a balanced electronic environment. Additionally, it is utilized in the preparation of specialty dyes and pigments, particularly those requiring thermal stability. Through chemical modification of the amino group, it can be converted into various heterocyclic systems, expanding its application scope in organic synthesis, as described in recent advances in heterocyclic chemistry. The bromine substituent provides a convenient handle for further functionalization, such as in cross-coupling reactions.