2-氯-5-氟烟酸乙酯

3-bromo-5-fluoro-2H-pyrazolo[3,4-b]pyridine

2-氨基-5-氟烟酸

2-氯-5-氟烟酰胺

2-(3,4-difluoroanilino)-5-fluoropyridine-3-carboxylic acid