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Sodium pyruvate-2,3-13C2

Ethyl acetoacetate-3,4-13C2

Acetyl chloride-13C2

Nitrobenzene-13C6

Di(1-benzotriazolyl) oxalate

1-Ethynyl-2,4-difluorobenzene

4-(3,5-Difluorophenyl)-4-oxobutyric acid

2-(Trifluoroacetyl)biphenyl

Magnesium bisulfite solution

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