2-(Difluoromethoxy)-3-nitro-5-(2,3,4-trichlorophenyl)pyridine
2-(Difluoromethoxy)-4-methyl-5-(3,4,5-trichlorophenyl)pyridine
2-(Difluoromethoxy)-4-methyl-5-(2,4,6-trichlorophenyl)pyridine
2-(Difluoromethoxy)-4-methyl-5-(2,3,4-trichlorophenyl)pyridine