4-Hydroxybutyl acrylate is a hydrophilic monomer characterized by an acrylate group and a hydroxyl functional group. With the molecular formula C₇H₁₂O₃, this compound plays a crucial role in polymer chemistry, particularly in the synthesis of copolymers and functionalized polymers. Due to its ability to undergo free radical polymerization, 4-hydroxybutyl acrylate is employed in various applications, including coatings, adhesives, and biomedical materials. Its hydroxyl group enhances reactivity and solubility, making it a valuable building block for developing advanced materials with specific properties.