Wiktionary
azelaic acid
n. (context organic compound English) An aliphatic dicarboxylic acid found in many cereals; it has an antibacterial action and is used in skin creams etc.
Wikipedia
Azelaic acid
Azelaic acid is an organic compound with the formula (CH)( COH). This saturated dicarboxylic acid exists as a white powder. It is found in wheat, rye, and barley. It is a precursor to diverse industrial products including polymers, plasticizers, as well as being a component of a number of hair and skin conditioners.