N-Acetyl-S-[4-(acetyloxy)-3-oxobutyl]-L-cysteine-13C4,1-Acetoxy-4-(N-acetyl-L-cysteinyl)-2-butanone-13C4,"1-Acetoxy-4-(N-acetyl-L-cysteinyl)-2-butanone-13C4 is an intermediate in the synthesis of N-Acetyl-S-(3,4-dihydroxybutyl)-L-cysteine-13C4 (A173713). N-Acetyl-S-(3,4-dihydroxybutyl)-L-cysteine-13C4 is labelled N-Acetyl-S-(3,4-dihydroxybutyl)-L-cysteine (A173710), which is a metabolite of butadiene.", Stable Isotopes
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