1-Piperazinecarboxylic acid, 4-(5-amino-2-pyrimidinyl)-, 1,1-dimethylethyl ester
1,1-Dimethylethyl 4-(5-amino-2-pyrimidinyl)-1-piperazinecarboxylate
4-(5-Aminopyrimidin-2-yl)piperazine-1-carboxylic acid tert-butyl ester
tert-Butyl 4-(5-aminopyrimidin-2-yl)piperazine-1-carboxylate