英文别名N-Methyl Palbociclib; Pyrido[2,3-d]pyrimidin-7(8H)-one,6-acetyl-8-cyclopentyl-5-methyl-2-[[5-(4-methyl-1-piperazinyl)-2-pyridinyl]amino]; Pyrido[2,3-d]pyrimidin-7(8H)-one, 6-acetyl-8-cyclopentyl-5-methyl-2-[[5-(4-methyl-1-piperazinyl)-2-pyridinyl]amino]-; Pabucilib impurity 42 
