(4-Hydroxybutyl)glycine is primarily used in biochemical research and pharmaceutical applications. It serves as a building block in the synthesis of peptides and other complex organic molecules, particularly in the development of novel therapeutic agents. Its structure allows it to act as a versatile intermediate in organic synthesis, enabling the creation of compounds with potential biological activity. Additionally, it is studied for its role in metabolic pathways and enzyme interactions, contributing to advancements in understanding cellular processes and drug design. Its hydroxyl and amino functional groups make it valuable in modifying biomolecules for enhanced stability or efficacy.