Brassylic acid is an organic compound with chemical formula (CH2)11(CO2H)2. A white solid, it is the C13-dicarboxylic acid. It is prepared by oxidation of erucic acid, which is abundant in some seed oils. Pelargonic acid is the coproduct. In the industrial setting, brassylic acid is used to produce specialty nylons, such as nylon 1313, as well as polymers, biodegradable solvents, lubricants, perfumes and plastics.