Used in protein purification processes, particularly in hydrophobic interaction chromatography (HIC). Its butyl groups interact with hydrophobic regions of proteins, allowing selective binding and separation under high salt conditions. Ideal for purifying enzymes, antibodies, and other biomolecules while maintaining their biological activity. The agarose base provides high stability and low nonspecific binding, making it suitable for both laboratory-scale and industrial applications. Can be regenerated and reused multiple times without significant loss of performance.