An Unusual Dicarboxylic Acid from the Giant Jellyfish Nemopilema nomurai

)-4-amino-2,3-dimethylheptadeca-2,4-diene-dioic acid, which was given the trivial name nemopilemic acid.Although dicarboxylic acids do not occur in appreciable amounts as components of animal or vegetable lipids, they are generally important metabolic pr oducts of fatty acids because they originate from them by oxidation.