Used primarily as an intermediate in organic synthesis, especially in the pharmaceutical and agrochemical industries. It reacts readily with amines and alcohols to form carbamates and carbonates, which are key structural motifs in various bioactive molecules. Commonly employed in the preparation of protecting groups for amines due to its selective reactivity. Also utilized in the synthesis of pesticides and herbicides, where it helps build complex ester and amide linkages. Its chloroformate group acts as an activating agent in peptide coupling and other condensation reactions. Handle with care due to its moisture sensitivity and potential lachrymatory effects.