英文别名racemic 3-cyclopentyl-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propanenitrile; 3-cyclopentyl-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazol-1-yl]propanenitrile; 1H-Pyrazole-1-propanenitrile, β-cyclopentyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-; β-Cyclopentyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-propanenitrile; Ruxolitinib Impurity N5; 1-(2-Cyano-1-cyclopentylethyl)-1H-pyrazole-4-boronic Acid Pinacol Ester 
