title: [The separation of the 4-[4-(dimethylamino) phenylazo]phenylthiohydantoin derivatives of leucine and isoleucine on polyamid thin-layer sheets in the picomol range (author's transl)].
abstract: The separation of the 4-[4-(dimethylamino)-phenylazo]phenylthiohydantoin derivatives of leucine and isoleucine has so far not been possible. In this paper a method is described which separates these two amino acid derivates in the picomol range on polyamide thin-layer sheets. The system (10% formic acid/ethanol 10:9) can be used either in one or in two dimensions.
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D004967:Estrogens; D006827:Hydantoins / Q000031:analogs & derivatives; D007202:Indicators and Reagents; D007532:Isoleucine / Q000031:analogs & derivatives* / Q000032:analysis; D010669:Phenylthiohydantoin / Q000031:analogs & derivatives
chemical_list: D004967:Estrogens; D006827:Hydantoins; D007202:Indicators and Reagents; D007532:Isoleucine; D010669:Phenylthiohydantoin
vernacular_title: Die Trennung der 4-[4-(Dimethylamino)phenylazo]phenylthiohydantoin-Derivate des Leucins und Isoleucins über Polyamid-Dünnschichtplatten im Picomol-Bereich.