Used as a reagent for introducing the tert-butoxycarbonyl (Boc) protecting group to amines in organic synthesis. It is particularly effective in peptide synthesis where selective protection of amino groups is required. The compound reacts under mild conditions, minimizing side reactions, and is especially useful when working with sensitive substrates. It can also be employed in the protection of other nucleophiles such as alcohols and thiols. Its stability and ease of handling make it a preferred choice over more hazardous Boc-protecting agents like di-tert-butyl dicarbonate in certain applications.