4-(Fluoromethyl)-3-methoxy-6-(trifluoromethoxy)pyridine-2-carboxylic acid
4-(Fluoromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid
4-(Difluoromethyl)-2-methoxy-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
5-(Fluoromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid