1-Ethyl-4-(ethylthio)-1H-pyrazolo(3,4)pyridine-5-carboxylic acid ethyl ester 1H-Pyrazolo(3,4-b)pyridine-5-carboxylic acid, 1-ethyl-4-(ethylthio)-, ethyl ester 50476-43-2 Ethyl 1-ethyl-4-ethylthio-1H-pyrazolo(3,4-b)pyridine-5-carboxylate SQ 65442 Sq 65,442