英文名稱
2-Chloro-8-cyclopentyl-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one
Yellow to Dark Yellow Solid
Chloroform (Slightly), Methanol (Slightly)
Standards; Pharmaceutical/API Drug Impurities/Metabolites;
2-?Chloro-?8-?cyclopentyl-?5-?methyl-?8H-?pyrido[2,?3-?d]?pyrimidin-?7-?one is an impurity of Palbociclib (P139900),(also known as compound number PD-0332991) is 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.