(r) 3 hydroxyisobutyric acid

(R)-3-Hydroxyisobutyric acid is an intermediate in the metabolic pathway of the amino acids valine, leucine, and isoleucine [the branched-chain amino acids (BCAAs)].

(R)-3-Hydroxyisobutyric acid sodium 是 3-羟基异丁酸尿症的生物化学标记，此代谢异常以尿液中该化合物浓度升高为特征。