PLACCEL M is a 7 membered-lactone (epsilon-caprolactone) monomer that is mainly used as a monomer for ring-opening polymerization with polyols to manufacture polycaprolactone. PLACCEL M has excellent chemical reactivity which allows modification of various kinds of resins and organic compounds to improve compatibility, solubility, flexibility and reactivity. These properties of PLACCEL M make it highly suitable for applications in the advanced materials industry. When used in production of advanced materials, PLACCEL M helps impart enhanced compatibility, solubility and flexibility properties to the materials due to its reactivity characteristics.