| 22 | 6 | 4Z,7Z,10Z,13Z,16Z,19Z | -44 | CAS 6217-54-5 | fish oil. In the human body its generation depends on consumption of omega 3 essential fatty acids (e.g., ALA or EPA), but the conversion process is inefficient.<ref name=grop2016/>  maternal milk, fish oil.<ref name=gues2011/>