Azelaoyl chloride is primarily used in the synthesis of polymers and specialty chemicals. It serves as a key intermediate in the production of polyamides and polyesters, which are widely utilized in the textile and plastics industries. Its ability to form stable bonds with amines and alcohols makes it valuable for creating high-performance materials with enhanced durability and thermal stability. Additionally, it is employed in the manufacture of lubricants and plasticizers, contributing to improved flexibility and longevity in various industrial applications. In the pharmaceutical sector, it is utilized as a building block for synthesizing active pharmaceutical ingredients (APIs) and other complex organic compounds. Its role in organic synthesis also extends to the production of surfactants and coatings, where it enhances properties like adhesion and resistance to environmental factors. Furthermore, in the cosmetics industry, it is used to produce skin care ingredients with anti-inflammatory properties and for improving skin smoothness.