Used in the synthesis of cyclopentenone derivatives, which are key intermediates in the production of pharmaceuticals such as antiviral and anti-inflammatory agents. It serves as a building block in organic synthesis, particularly in the development of prostaglandin analogs. Its reactive ketone and carboxylic acid functional groups allow for versatile chemical modifications, making it valuable in medicinal chemistry and drug design. Also employed in the preparation of specialty polymers and fine chemicals due to its cyclic structure and functional group compatibility.