2 3 4 6-tetrachloro phenol July 8, 2019 16 32 64 128 Phenol 2 20-methylenebis 3 4 6-tetrachloro 2 4 6-trichlorophenol 2 4 5-trichlorophenol 2 4 6-trichlorophenol cas 2 3 4 6-tetrachlorophenol
