300px In chemical structure,<unk>  is a carboxylic acid with a 20-carbon chain and four cis-double bonds; the first double bond is located at the sixth carbon from the omega end. Some chemistry sources define<unk> ' to designate any of the eicosatetraenoic acids. However, almost all writings in biology, medicine, and nutrition limit the term to all cis-5,8,11,14-eicosatetraenoic acid.
Arachidonic acid
Choline
Glabrene
Inositol
Oleuropein
Glycogen
Keto acid
Phenylacetic acid