Cbz-B3A is widely used in peptide synthesis as a protecting group for amino acids. It helps in preventing unwanted reactions during the formation of peptide bonds, ensuring the desired sequence is achieved. Additionally, it is employed in organic synthesis to protect functional groups, allowing selective reactions to occur without interference. Its stability under various conditions makes it a valuable tool in the development of pharmaceuticals and bioactive compounds. Researchers also utilize it in the study of enzyme mechanisms and protein interactions, providing insights into biochemical processes.