Ribociclib1211441-98-3100 % similar 2-Chloro-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1211443-61-649 % similar Palbociclib571190-30-239 % similar 2-Chloro-7-cyclopentyl-7H-pyrrolo[2,3-D]pyrimidine-6-carboxylic acid1211443-58-133 % 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-carboxylate571188-82-430 % similar