QR090222

利博西尼亚硝基杂质 22

Ribociclib Nitroso Impurity 22

别名：tert-butyl 4-(6-((7-cyclopentyl-6-(dimethylcarbamoyl)-7H-pyrrolo[2,3-d]pyrimidin-2-yl)(nitroso)amino)pyridin-3-yl)piperazine-1-carboxylate