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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Reversed-phase ion-pair high-performance liquid chromatography of mercaptoacetate and N-acetylcysteine after derivatization with N-(1-pyrene)maleimide and N-(7-dimethylamino-4-methyl-3-coumarinyl)maleimide.

We have developed a high-performance liquid chromatographic system capable of resolving mercaptoacetate and N-acetylcysteine as their N-(1-pyrene)maleimide (PM) and N-(7-dimethylamino-4-methyl-3-coumarinyl)maleimide (DACM) derivatives. Good resolution was obtained by ion pairing with tetramethylammonium hydroxide and chromatography on reversed phase. The detection limits for the thiols were about 50 fmol as their DACM derivatives and about 400 fmol as their PM derivatives. The method is illustrated by chromatography of urinary thiols which indicates that the derivatization and chromatography procedures should be well applicable in bioanalytical work.[1]

References

  1. Reversed-phase ion-pair high-performance liquid chromatography of mercaptoacetate and N-acetylcysteine after derivatization with N-(1-pyrene)maleimide and N-(7-dimethylamino-4-methyl-3-coumarinyl)maleimide. Kågedal, B., Källberg, M. J. Chromatogr. (1982) [Pubmed]
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