Ketobutyric acid, ketobutanoic acid, oxobutyric acid, or oxobutanoic acid may refer to the following chemical compounds:
- α-Ketobutyric acid (2-oxobutyric acid)
 - β-Ketobutyric acid (acetoacetic acid or 3-oxobutyric acid)
 
In addition, oxobutyric acid, or oxobutanoic acid may refer to:
- 4-Oxobutanoic acid (succinic semialdehyde, 4-oxobutyric acid)
 
See also
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