Synonyms: alpha-Keto-3-(methyl-d3)-butyric acid-4-13C sodium; alpha-Ketoisovaleric acid-13C,d3 sodium salt; 2-Ketoisovaleric acid-13C,d3 sodium salt; 3-Methyl-2-oxobutanoic acid-13C,d3 sodium salt; Sodium alpha-ketoisovalerate-3-(methyl-d3),4-13C Molecular Formula: 13CC4D3H4NaO3 Molecular Weight:...