英文别名Pyrido[2,3-d]pyrimidin-7(8H)-one, 6-acetyl-8-cyclopentyl-2-[[5-(4-hydroxy-1-piperazinyl)-2-pyridinyl]amino]-5-methyl; N-Hydroxy Palbociclib; Palbociclib metabolite M7; 6-acetyl-8-cyclopentyl-2-[[5-(4-hydroxypiperazin-1-yl)pyridin-2-yl]amino]-5-methylpyrido[2,3-d]pyrimidin-7-one; Pyrido(2,3-d)pyrimidin-7(8H)-one, 6-acetyl-8-cyclopentyl-2-((5-(4-hydroxy-1-piperazinyl)-2-pyridinyl)amino)-5-methyl-; 6-Acetyl-8-cyclopentyl-2-((5-(4-hydroxypiperazin-1-yl)pyridin-2-yl)amino)-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one; 6-Acetyl-8-cyclopentyl-2-((5-(4-hydroxypiperazin-1-yl)pyridin-2-yl)amino)-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one (Palbociclib Impurity); 6-Acetyl-8-cyclopentyl-2-[[5-(4-hydroxy-1-piperazinyl)-2-pyridinyl]amino]-5-methyl-pyrido[2,3-d]pyrimidin-7(8H)-one; 6-acetyl-8-cyclopentyl-5-methyl-2-((5-(4-oxo-4l4-piperazin-1-yl)pyridin-2-yl)amino)pyrido[2,3-d]pyrimidin-7(8H)-one 
