4-[(Cyclopentylcarbamoyl)amino]benzeneboronic acid, pinacol ester 95%4-(3-Cyclopentylureido)benzeneboronic acid, pinacol ester1-Cyclopentyl-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea4-(3-Cyclopentylureido)benzeneboronic acid pinacol ester4-(3-环戊基脲)苯硼酸频哪酯1-Cyclopentyl-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]urea