1-Piperazinecarboxylic acid, 4-(4-aminobutyl)-, 1,1-dimethylethyl ester
1,1-Dimethylethyl 4-(4-aminobutyl)-1-piperazinecarboxylate
tert-Butyl 4-(4-aminobutyl)piperazine-1-carboxylate
1-Boc-4-(4-aminobutyl)piperazine
4-(4-Aminobutyl)piperazine-1-carboxylic acid tert-butyl ester