What is an Omega-9 fat?
C18 H34 O2 mw 282.46 Oleic acid is an 18-carbon fat of the Omega-9 class, because the first and only double bond begins at the 9th carbon from the methyl end of the molecule. It is considered monounsaturated because it has 1 double-bond. This double-bond produces a slight kink in the chemical structure.