|Jmol-3D images||Image 1
|Molar mass||104.10 g mol−1|
|Related carboxylic acids||propionic acid
| (what is: / ?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
beta-Hydroxybutyric acid (also known as beta-hydroxybutyrate, 3-hydroxybutyric acid or 3-hydroxybutyrate) is a carboxylic acid, technically not a ketone body[clarification needed] . It is a chiral compound having two enantiomers, D-3-hydroxybutyric acid and L-3-hydroxybutyric acid. The concentration of beta-hydroxybutyrate, like that of other ketone bodies, is raised in ketosis. In humans, beta-hydroxybutyrate is synthesized in the liver from acetyl-CoA in a reaction catalyzed by the enzyme beta-hydroxybutyrate dehydrogenase and can be used as an energy source by the brain when blood glucose is low. Diabetic patients can have their ketone levels tested via urine or blood to indicate diabetic ketoacidosis. In alcoholic ketoacidosis, this ketone body is produced in greatest concentration. Both types of ketoacidosis result in an increase beta-hydroxybutyrate to oxaloacetate ratio, resulting in TCA cycle stalling and shifting of glucose towards ketone body production.[clarification needed]
- O. E. Owen et al. (1967). "Brain Metabolism during Fasting". The Journal of Clinical Investigation 46 (10): 1589–1595. doi:10.1172/JCI105650. PMC 292907. PMID 6061736.
- Yoshiharu Doi, Masao Kunioka, Yoshiyuki Nakamura, Kazuo Soga (1988). "Nuclear magnetic resonance studies on unusual bacterial copolyesters of 3-hydroxybutyrate and 4-hydroxybutyrate". Macromolecules 21 (9): 2722–2727. doi:10.1021/ma00187a012.