.alpha.-Hydroxy-.alpha.-methylpropanoic acid .alpha.-Hydroxyisobutanoic acid .alpha.-Hydroxyisobutyric acid 2-Hydroxy-2-methylpropanoic acid 2-Hydroxy-2-methylpropionic acid 2-Hydroxyisobutyric acid 2-Methyllactic acid 594-61-6 Acetonic acid Hydroxydimethylacetic acid Lactic acid, 2-methyl- Lactic acid, 2-methyl-, L- NSC402158 Propanoic acid, 2-hydroxy-2-methyl-