英文别名Palbociclib Impurity 77; tert-butyl 4-(2-aminopyridin-4-yl)piperazine-1-carboxylate; 1-BOC-4-(2-AMINO-4-PYRIDINYL)-PIPERAZINE; 4-(4-Boc-1-piperazinyl)pyridin-2-amine; 1-Piperazinecarboxylic acid, 4-(2-amino-4-pyridinyl)-, 1,1-dimethylethyl ester; Palbociclib Impurity 110 
