1,3,5-Trichlorophenol 2,4,6-Trichlorfenol 2,4,6-Trichlorophenol 88-06-2 Dowicide 2S NCI-C02904 NSC2165 Omal Phenachlor Phenol, 2,4,6-trichloro- WLN: QR BG DG FG