Sodium 2-Oxobutyrate-13C,d5
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α-keto-n-Butyric Acid-13C,d5
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Propionylformic Acid-13C,d5
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2-Oxobutyric Acid-13C,d5 Sodium
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2-Ketobutanoic Acid-13C,d5 Sodium
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2-Ketobutyric Acid-13C,d5 Sodium
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3-Methylpyruvic Acid-13C,d5- Sodium
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α-Ketobutyric Acid-13C,d5
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Sodium α-Ketobutyrate-13C,d5
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