Dear Krystyna,
you can find some Fmoc-protected 15N-AA (A,N,D,G,I,L,F,P and W) as well as
other unprotected 15N enriched amino acids at Cambridge Isotope
Laboratories (50 Frontage Road, Andover, MA 01810-5413, USA, URL:
http://www.isotope.com) and a recipe for preparing the Fmoc-AA from
Fmoc-OSu and the wanted AA at
http://www.interactiva.de/knowledge/peptidechem/9_experimental_procedures.html
I hope this helps.
Yours sincerely,
Marcus Macht
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Dr. Marcus Macht
University of Cologne
Centre for molecular medicine - Service laboratory
Joseph-Stelzmann-Str. 52
50931 Cologne, Germany
Tel.: +49 221 478-6995
Fax: +49 221 478-6977
e-mail: Marcus.Macht@uni-koeln.de
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