1977-34-0 4-(2,4-Dihydroxy-3,3-dimethylbutyramido)-2-hydroxybutyric acid BUTYRIC ACID, 4-(2,4-DIHYDROXY-3,3-DIMETHYLBUTYRAMIDO)-2-HYDROXY- Butanoic acid, 4-((2,4-dihydroxy-3,3-dimethyl-1-oxobutyl)amino)-2-hydroxy- alpha-Hydroxyhomopantothenic acid alpha-Oxy-hopa