What is isobutyric acid? What role does isobutyric acid play in lipids?

[Alias]2-methylpropionic acid, dimethylacetic acid. ［Molecular Formula］C4H8O2 ［Structural Formula］(CH3)2CHCOOH [Properties]Isobutyric acid is a colorless oily liquid with a pungent odor similar to but…