Also acts on ethyl (R)-3-oxobutanoate and some other (R)-3-hydroxy acid esters. The (R)- symbol is allotted on the assumption that no substituents change the order of priority from O-3 > C-2 > C-4. A subunit of yeast fatty acid synthase EC 22.214.171.124, fatty-acyl-CoA synthase system. cf. EC 126.96.36.1990, (S)-3-hydroxyacid ester dehydrogenase.
EC 188.8.131.529 created 1990 as EC 184.108.40.206, transferred 2003 to EC 220.127.116.119, modified 2018