... acid (Fmoc-AUA), 1-[bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]-pyridinium 3 ... N-2-N-6-Bis(9-fluorenyl-methyloxycarbonyl)-l-lysine (Fmoc-Lys(Fmoc)-OH) was purchased ... The organic layer was dried with anhydrous sodium sulfate, and the was solvent removed under ...