Thin-layer chromatography of some methylated amino acids with aqueous salt solutions used as eluents.
The retention order of methylated lysine and arginine derivatives followed a reversed-phase separation pattern on various silicas with aqueous salt solutions used as eluents. Principal component analysis established that the origin of the silica exerts a dominant influence on their chromatographic performance, and the effect of impregnation and salt quality are of secondary importance. Good linear correlations were found between the lipophilicity-decreasing effect of monovalent cations and their ionic radii.
D000085:Acetates; D019342:Acetic Acid; D000596:Amino Acids / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002855:Chromatography, Thin Layer; D008239:Lysine / Q000031:analogs & derivatives; D008745:Methylation; D012965:Sodium Chloride; D012996:Solutions
D000085:Acetates; D000596:Amino Acids; D012996:Solutions; D012965:Sodium Chloride; D008239:Lysine; D019342:Acetic Acid