6-Bromo-2-chloro-8-cyclopentyl-5-methylpyrido[2,3-D]pyrimidin-7(8H)-one1016636-76-2100 % similar 2-Chloro-8-cyclopentyl-5-methylpyrido[2,3-D]pyrimidin-7(8H)-one1013916-37-457 % similar tert-Butyl 4-[6-(6-bromo-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydro-pyrido[2,3-D]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylate571188-82-449 % similar 2-Chloro-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1211443-61-642 % similar 2-Chloro-7-cyclopentyl-7H-pyrrolo[2,3-D]pyrimidine-6-carboxylic acid1211443-58-141 % similar Palbociclib571190-30-240 % similar