2-Bromo-4-(difluoromethyl)-5-hydroxypyridine-3-carboxylic acid
2-Bromo-4-(difluoromethyl)-3-hydroxypyridine-5-carboxylic acid
2-Bromo-3-(difluoromethyl)-6-hydroxypyridine-4-carboxylic acid
3-Bromo-6-(difluoromethyl)-2-hydroxypyridine-4-carboxaldehyde