英文别名Palbociclib Impurity D; 6-bromo-8-cyclopentyl-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)pyrido[2,3-d]pyrimidin-7(8H)-one dihydrochloride; Palbociclib-013-HCl; 6-Desacetyl-6-Bromo Palbociclib Hydrochloride; Palbociclib-5; Pabuxilibu impurity 12