英文别名Palbociclib Impurity 17; Palbociclib Impurity N-Oxide; Palbociclib N-oxide; 6-acetyl-8-cyclopentyl-5-methyl-2-[[5-(1-oxidopiperazin-1-ium-1-yl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7-one; 1-[6-({6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7H,8H-pyrido[2,3-d]pyrimidin-2-yl}amino)pyridin-3-yl]piperazin-1-ium-1-olate; 1-Piperazin-N-oxide Palbociclib; 6-Acetyl-8-cyclopentyl-5-methyl-2-((5-(1-oxido-1-piperazinyl)-2-pyridinyl)amino)pyrido(2,3-d)pyrimidin-7(8H)-one; Palbociclib Impurity S; Palbociclib Piperazine N-Oxide; Pyrido[2,3-d]pyrimidin-7(8H)-one, 6-acetyl-8-cyclopentyl-5-methyl-2-[[5-(1-oxido-1-piperazinyl)-2-pyridinyl]amino]- 
