How is CH3CH2COOH named using IUPAC rules?

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oxidation of alcohols — carboxylic acid Alcohols may be oxidized to give aldehydes, ketones, and carboxylic acids. The oxidation of organic compounds generally increases the number of bonds from carbon to oxygen, and it may decrease the number of bonds to hydrogen.

The IUPAC name for the compound ${CH}_{3} {CH}_{2} COOH$ is propanoic acid.1

According to IUPAC rules, the name is derived from the longest carbon chain containing the carboxyl group. You identify the parent alkane—in this case, propane—drop the final "-e," and append the suffix "-oic" followed by the word "acid". Because the carboxyl carbon is designated as carbon 1, no numbering is required for this specific structure.1