A 1485 (OTTO) Adipic acid, 99% Cas 124-04-9 - used in applications also involve polymers: it is a monomer for production of polyurethane and its esters are plasticizers, especially in PVC. A 1485 (OTTO) Adipic acid, 99% Cas 124-04-9 - used as a precursor for the production of nylon.