The chemical Palbociclib hydrochloride has a known molecular formula of C24-H29-N7-O2.Cl-H. Synonyms may include: UNII-BKC4F3Q5XL, PD-0332991 hydrochloride, Pyrido(2,3-d)pyrimidin-7(8H)-one, 6-acetyl-8-cyclopentyl-5-methyl-2-((5-(1-piperazinyl)-2-pyridinyl)amino)-, hydrochloride (1:1), Pyrido(2,3-d)pyrimidin-7(8H)-one, 6-acetyl-8-cyclopentyl-5-methyl-2-((5-(1-piperazinyl)-2-pyridinyl)amino)-, monohydrochloride (ChemID).