... 34927;E-mail: sebela@prfholnt.upol.czAbbreviations: ABA, 2-aminobenzaldehyde; ACA, 6-aminocaproicacid; BEA, 2-bromoethylamine; CAO, copper-containing amineoxidase; DABY, 1,4-diamino-2-butyne; DAPY, ... 0.1Mammonium bicarbonate containing ACA as a reagent fortrapping of the product aminoaldehyde, where several newpeaks appeared. ACA itself is represented by a peak with m/z 132.1 (MS/MS: a clear fragment ... 2004beginning (10 min), then with an increasing linear gradientfrom 0 t o 100% B for 20 min and isocratically at 100% Bfor a n a dditional 2 0 min. This w as followed with a decreasing linear gradie...