This chemical is primarily used in organic synthesis as a protective group for amines. The benzyloxycarbonyl (Cbz) group safeguards the amine functionality during multi-step reactions, preventing unwanted side reactions. After the desired transformations are complete, the Cbz group can be selectively removed under mild conditions, restoring the amine. Additionally, the 4-methylbenzenesulfonate (tosylate) group serves as a good leaving group, making the compound useful in nucleophilic substitution reactions. It is often employed in the synthesis of peptides, pharmaceuticals, and complex organic molecules where precise control over reactivity is essential. Its stability and ease of removal make it a valuable tool in advanced chemical research and industrial applications.