“…Fatty alkanolamides have been separated on silica gel columns using chloroform in mixtures with diethyl ether, diethyl ketone, acetone, methanol in varying proportions, and methanol alone, as elutrients (564). The occurrence of cyclohexylamine in urine as a breakdown product of cy clama te has been detected by thin-layer chromatography (121). Ary lamines have been analyzed by thin-layer chromatography as phthalimidomethyl derivatives (33) or directly as arylamines (203) on silica gel; aromatic amines have also been analyzed by thin-layer chromatography on cellulose impregnated with bis(2-ethylhexyl) H phosphate and aqueous perchlorate-chloride solvent as mobile phase (348).…”