Sigma-Aldrich
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Alpha Ketoacids



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5713342-Keto-3-(methyl-13C)-butyric acid-4-13C sodium salt 99 atom % 13C, 97% (CP) pricing
6343792-Keto-3-(methyl-13C,d2)-butyric acid-4-13C,d2 sodium salt 98 atom % 13C, 98 atom % D pricing
5964182-Keto-3-(methyl-d3)-butyric acid-1,2,3,4-13C4 sodium salt 98 atom % D, 99 atom % 13C pricing
6378582-Keto-3-(methyl-d3)-butyric acid-1,2,3,4-13C4, 3-d1 sodium salt 99 atom % 13C, 98 atom % D, 98% (CP) pricing
5949032-Keto-3-(methyl-d3)-butyric acid-4-13C sodium salt 99 atom % 13C, 98 atom % D pricing
6918872-Keto-3-(methyl-d3)-butyric acid-4-13C, 3-d1 sodium salt 97 atom % D, 99 atom % 13C, 97% (CP) pricing
5890632-Keto-3-methyl-13C-butyric-4-13C, 3-d acid sodium salt 98 atom % D, 99 atom % 13C, 97% (CP) pricing
6639802-Keto-3-methylbutyric acid-13C5 sodium salt 99 atom % 13C pricing
6075682-Keto-3-methylbutyric acid-13C5,3-d1 sodium salt 98 atom % D, 99 atom % 13C pricing
5713422-Ketobutyric acid-4-13C sodium salt hydrate 99 atom % 13C, 97% (CP) pricing
5892762-Ketobutyric acid-4-13C,3,3-d2 sodium salt hydrate 99 atom % 13C, 98 atom % D, 98% (CP) pricing
6347272-Ketobutyric acid-4-13C,4,4-d2 sodium salt hydrate 99 atom % 13C, 98 atom % D, 98% (CP) pricing
6378312-Ketobutyric acid-4-13C,4-d1 sodium salt hydrate 99 atom % 13C, 97 atom % D, 98% (CP) pricing
6075332-Ketobutyric acid-4-13C,3,3,4,4,4-d5 sodium salt hydrate 97 atom % D (CD2), 99 atom % 13C, 50-70 atom % D (13CD3), 98% (CP) pricing
6075412-Ketobutyric acid-13C4,3,3-d2 sodium salt hydrate 99 atom % 13C, 98 atom % D, 98% (CP) pricing