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Related to hydroxybutyric acid: 3-hydroxybutyric acid
Any of several organic acids, C4H8O3, that are derivatives of butyric acid. One of these acids, beta-hydroxybutyric acid, is a ketone body that accumulates in the blood and urine when fat is being metabolized.
C4H8O3, any of the acids present in the urine, esp. in diabetic ketoacidosis, when the conversion of fatty acids to ketones increases.
See also: acid