The (main) functional group in esters are: [tex]R_1OOR_2[/tex] Where [tex]R_1[/tex] and [tex]R_2[/tex] are carbon chain. When I though about it, I've never heard the systematic name of this functional group. What is this functional group called? I've seen esterbonding etc. but that doesn't sound systematic as ex. alkoxy group, carbonyl group and so on.