英文名称
4-[6-[(8-Cyclopentyl-6-ethenyl-7,8-dihydro-5-methyl-7-oxopyrido[2,3-d]pyrimidin-2-yl)amino]-3-pyridinyl]-1-Piperazinecarboxylic Acid 1,1-Dimethylethyl Ester
4-(6-((8-环戊基-5-甲基-7-氧代-6-乙烯基-7,8-二氢吡啶并[2,3-d]嘧啶-2-基)氨基)吡啶-3-叔丁酯基)哌嗪-1-甲酸叔丁酯
Light Yellow to Dark Beige Solid
Dichloromethane (Slightly, Heated), DMSO (Slightly, Heated, Sonicated)
Standards; Pharmaceutical/API Drug Impurities/Metabolites;
4-[6-[(8-Cyclopentyl-6-ethenyl-7,8-dihydro-5-methyl-7-oxopyrido[2,3-d]pyrimidin-2-yl)amino]-3-pyridinyl]-1-Piperazinecarboxylic Acid 1,1-Dimethylethyl Ester is an impurity of Palbociclib (P139900) an experimental drug for the treatment of breast cancer being developed by Pfizer. It is a selective inhibitor of the cyclin-dependent kinases CDK4 and CDK6.