Palbociclib Impurity 43

Chemical Name: tert-butyl 4-(1-(6-bromo-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)-2-imino-1,2-dihydropyridin-3-yl)piperazine-1-carboxylate

Synonym: 4-Amino-N-(((4S,5R)-4-benzyl-2-oxooxazolidin-5-yl)methyl)-N-isobutylbenzenesulfonamide