Methylene-Interrupted Polyenes
These fatty acids have 2 or more cis double bonds that are separated from each other by a single methylene bridge (-CH2- unit). This form is also sometimes called a divinylmethane pattern.
| −C−C=C−C−C=C− |
The essential fatty acids are all omega-3 and -6 methylene-interrupted fatty acids. See more at Essential fatty acids—Nomenclature
Read more about this topic: Polyunsaturated Fatty Acid