-oate explained

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, usually an alkyl or aryl radical forming an ester. For example, methyl benzoate is a molecular compound with the structure C₆H₅–CO–O–CH₃, and its condensed structural formula usually written as C₆H₅COOCH₃.
• Formed by removing the hydrogen atom in the –COOH, producing an anion, which joins with a cation forming a salt. For example, the sodium benzoate is an ionic compound with the structure C₆H₅–CO–O⁻ Na⁺, and its condensed structural formula usually written as C₆H₅CO₂Na.

The suffix comes from "-oic acid".

The most common examples of compounds named with the "oate" suffix are esters, like ethyl acetate, .

References

• Book: 1993 (including revisions, published and hitherto unpublished, to the 1979 edition of Nomenclature of Organic Chemistry) . International Union of Pure and Applied Chemistry Organic Chemistry Division Commission on Nomenclature of Organic Chemistry . Panico . Robert . Powell . Warren H. . Richer . Jean-Claude . Oxford . . 1995 . 2nd . 9780632034888.
• Book: Nomenclature of Organic Chemistry

  IUPAC Recommendations and Preferred Names 2013

  . International Union of Pure and Applied Chemistry Division of Chemical Nomenclature and Structure Representation. Henri A.. Favre. Warren H.. Powell. Royal Society of Chemistry. Cambridge. 2014. 10.1039/9781849733069. 978-1-84973-306-9.