TABLE 2.
Fatty acids and acyls: shorthand notation examples
| Chain Type/Functional Group | Lipid Class Level Massa | Lipid Species Levelb | Fatty Acyl Level | LIPID MAPS Fatty Acyl Structure Level |
| Straight chain | FA (304) | FA 20:4 | FA 20:4 | FA 20:4(4Z,8Z,11Z,4Z) |
| FA (282) | FA 18:1 | FA 18:1 | FA 18:1(9E) | |
| FA 18:1(9)c | ||||
| Methyl branched | FA (312) | FA 20:0 | FA 16:0_Me4 | FA 16:0(3Me,7Me,11Me,15Me) |
| Hydroxy | FA (300) | FA 18:0_OH | FA 18:0(9OH) | |
| Keto | FA (200) | FA 12:0 | FA 11:0_O | FA 11:0(3O) |
a
Uncharged molecular mass.
b
Annotation based on the assumption of a straight-chain fatty acid with no functional groups except double bond(s).
c
Unknown geometry.