4-N-丁基吡啶-2-羧酸

3-(pentafluoro-λ⁶-sulfanyl)benzoic acid

2-bromo-3-fluoroquinoline-4-carboxylic acid

2-bromo-6-chloro-3-fluoroquinoline-4-carboxylic acid

2-bromo-3,7-difluoroquinoline-4-carboxylic acid