Ruxolitinib Impurity 105

(R) -1- (2-cyano-1-cyclopentylethyl) -4- (7H-pyrrolo[2,3-d]pyrimidin-4-yl) -1H-pyrazole 2-oxide

C17H18N6O

322.37

Ruxolitinib

(R) -1- (2-cyano-1-cyclopentylethyl) -4- (7H-pyrrolo[2,3-d]pyrimidin-4-yl) -1H-pyrazole 2-oxide