4:38 (Triple only) know that esters contain the functional group -COO- Esters contain the functional group -COO- An example of an ester is ethyl ethanoate: Hydr0Gen2019-05-13T15:34:08+00:00Categories: (g) Esters, 4 Organic chemistry, Edexcel iGCSE Chemistry|Tags: 4:38, Chemistry, ChemistrySpecPointsNew2019, GCSE, GCSE_Chemistry_SpecPoint, SpecPoint, Topic: Alcohols & Carboxylic Acids, Triple|