3,3-Dimethyl-2-oxobutyric acid 815-17-8 Butanoic acid, 3,3-dimethyl-2-oxo- Butyric acid, 3,3-dimethyl-2-oxo- Glyoxylic acid, tert-butyl- NSC16648 Pyruvic acid, trimethyl- Trimethylpyruvic acid