英文别名1-[(2-fluorophenyl)methyl]pyrazolo[3,4-b]pyridine-3-carboxamide; Riociguat Impurity 2; Riociguat-19; 1H-Pyrazolo[3,4-b]pyridine-3-carboxamide, 1-[(2-fluorophenyl)methyl]-; Riociguat EP Impurity 19; 1-(2-Fluorbenzyl)-1H-pyrazolo[3,4-b]pyridin-3-carboxamid