Benzyloxyacetic acid is an organic compound featuring a carboxylic acid group linked to a benzyloxy moiety via a methylene spacer. It serves as a versatile synthetic building block, particularly valued for its bifunctional nature which allows for further derivatization at both the carboxylic acid and the benzyl-protected hydroxyl surrogate. Its primary application is in pharmaceutical and fine chemical synthesis. It is commonly used as an intermediate in the preparation of various bioactive molecules. For instance, it can be utilized to introduce the benzyloxyacetic acid side chain or to serve as a precursor for more complex structures through reactions involving the carboxylic acid group, such as amide coupling or esterification. As a readily available starting material, it finds use in research and development for constructing molecular libraries. Standard safety precautions for handling carboxylic acids should be observed, including the use of personal protective equipment to avoid skin and eye irritation.