2 3 dihydroxybutanedioic acid formula July 8, 2019 16 32 64 128 2 3 dihydroxybutanedioic acid structural formula 2 3-dihydroxy-3-methylbutanoate 2 3-dihydroxybutaandizuur 2 3 dihydroxybutanoic acid 2 3-dihydroxybutanedioic acid