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Keto acids are organic acids containing a ketone functional group and a carboxylic acid group.
Common types of keto acids include:
- Alpha-keto acids, or 2-oxo acids, such as pyruvic acid have the keto group adjacent to the carboxylic acid
- Beta-keto acids, or 3-oxo acids, such as acetoacetic acid have the ketone group at the second carbon from the carboxylic acid
- Gamma-keto acids, or 4-oxo acids, such as levulinic acid have the ketone group at the third carbon from the carboxylic acid
- Keto+Acids at the US National Library of Medicine Medical Subject Headings (MeSH)