These constituents are compounds that form when alcohols react with acids. This reaction is known as “esterification.” Esters get their names from both of their original molecules – the “-ol” suffix of the alcohol molecule changes to a “-yl” ending instead and the “-ic” suffix of the acid molecule is replaced by “-ate.” An example of a popular Ester is “Linalyl acetate,” which can be found in many essential oils including those of Lavender, Clary Sage, and Petitgrain. Esters lend the most balancing properties of all essential oil components.