4-ethoxy-1-ethyl-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid ethyl ester 、 、
Lithium aluminium hydride 以4-ethoxy-1-ethyl-3-methyl-1H-pyrazolo[3,4-b]pyridine-5-methanol is obtained的产率得到(4-ethoxy-1-ethyl-3-methyl-1
H-pyrazolo[3,4-
b]pyridin-5-yl)-methanol