Question

what is IUPAC name of given compound
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Answer 1

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International Union of Pure and Applied Chemistry

Carboxylic acid, any of a class of organic compounds in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond and to a hydroxyl group (―OH) by a single bond. ... The carboxyl (COOH) group is so-named because of the carbonyl group (C=O) and hydroxyl group.