2-oxobutanoic acid 2-ketobutyric acid 600-18-0 W372307_ALDRICH 2KT 2-Ketobutanoic acid 3-Methylpyruvic acid EINECS 209-986-9 FEMA No. 3723 NSC 60533 alpha-Ketobutric acid alpha-Oxo-n-butyric acid C00109 2-keto-butyrate 2-oxo-butyrate 2-oxobutyrate 2-oxobutyric acid alpha-ketobutyric acid alpha-oxobutyric acid .alpha.-Ketobutric acid .alpha.-Ketobutyric acid .alpha.-Oxo-n-butyric acid .alpha.-Oxobutyrate .alpha.-Oxobutyric acid Butanoic acid, 2-oxo- Butyric acid, 2-oxo- Formic acid, propionyl- Ketobutyrate NSC60533 Pyruvic acid, methyl- 2-Oxo-n-butyric acid Butanoic acid, 2-oxo- (9CI) Butyric acid, 2-oxo- (8CI) Propionylformic acid alpha-keto-n-Butyric acid CHEBI:30831 75820_FLUKA K401_ALDRICH 2-oxo-butanoic acid 3-methyl pyruvic acid LMFA01060002