C14-labeled pyrrolidonecarboxylic acid as a contaminant in chromatography.
D001923:Brain Chemistry; D002247:Carbon Isotopes; D002854:Chromatography, Paper; D005971:Glutamates; D005973:Glutamine; D005978:Glutathione; D011760:Pyrrolidinones / Q000032:analysis*
D002247:Carbon Isotopes; D005971:Glutamates; D011760:Pyrrolidinones; D005973:Glutamine; D005978:Glutathione