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The suffix -oate is the IUPAC nomenclature used in organic chemistry to form names of compounds formed from carboxylic acids. They are of two types:-

  • Formed by replacing the hydrogen atom in the -COOH by some other radical, for example methyl benzoate C6H5-CO-OCH3
  • Formed by removing the nucleus (proton) of the hydrogen atom in the -COOH, producing an anion: then add a cation, for example sodium benzoate C6H5-CO-O- Na+

The suffix is derived from "-oic acid". Template:Orgchemsuffixes