Preparative paper chromatography (PPC) for the purification of synthetic compounds labelled with 14C : choline, chlormequat, glutamic acid, indoleacetic acid and urea is described. The injiuence of some parameters as time, amount of substances used and geometry factors (dimensions of paper sheets) on the repeatibility of PPC are given.
Die Synthese der Titelverbindung hängt stark von der Reinheit des verwendeten Äthylenchlorhydrins sowie der Trennungs‐Methode des bei der Kondensation mit KMCN gebildeten [l‐′4C]Äthylen‐ cyanhydrins (ÄCH) ab.
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