TY - JOUR IS - 13 SN - 0148-3919 EP - 2775 N2 - An improved RP-HPLC method on ODS-Hypersil column with precolumn derivatization with Marfey's reagent were used to monitor racemization in N-, C- and/or side-chain protected amino acid derivatives by separation of a series of new diastereoisomeric Marfey's compounds. Chromatographic samples were obtained by partial deprotection of different starting materials. In a simple two-step procedure (deprotection and derivatization) the compounds of amino acids formed stable diastereomeric derivatives having facile resolutions. UR - https://doi.org/10.1080/10826079408013498 Y1 - 1994/// AV - restricted TI - Hplc determination of enantiomeric purity of protected amino acid derivatives used in peptide synthesis SP - 2759 A1 - Szókán Gyula A1 - Hadfi S A1 - Krizsán Krisztina A1 - Liembeck A A1 - Krecz I A1 - Almás M A1 - Somlai Csaba N1 - Z9: 13 WC: Biochemical Research Methods; Chemistry, Analytical VL - 17 JF - JOURNAL OF LIQUID CHROMATOGRAPHY ID - publicatio31995 ER -