Succinyl chloride is primarily used as a reagent in organic synthesis to introduce the succinyl group into various compounds. It is widely employed in the production of pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs) and intermediates.

In polymer chemistry, it serves as a key monomer for the preparation of polyesters and polyamides, contributing to the development of materials with specific mechanical and thermal properties. Additionally, it is utilized in the modification of proteins and peptides, enabling the creation of succinylated derivatives for research and therapeutic purposes.

In the field of agrochemicals, succinyl chloride is involved in the synthesis of herbicides, fungicides, and other crop protection agents. Its reactivity with amines and alcohols makes it a versatile building block for constructing complex molecules in both industrial and laboratory settings.