4-bromo-3-ethoxymethyl-benzoic Acid Ethyl Ester CAS：948349-66-4

1. Key Intermediate in Pharmaceutical Synthesis: It serves as a core raw material for synthesizing small-molecule drugs with specific biological activities (such as anti-tumor and anti-bacterial drugs), and constructs key structural fragments of drug molecules through nucleophilic substitution, coupling and other reactions.

2. Functional Material and Research Tool: It can be used to prepare materials with special properties like fluorescent polymers (for optoelectronic displays and biological labeling). Meanwhile, it is also a common substrate in organic chemistry for studying reaction mechanisms and developing new synthesis methods.