Similar names: Phosphoric acid, dimethyl 3,5,6-trichloro-2-pyridyl ester (7CI,8CI); 2-Pyridinol, 3,5,6-trichloro-, dimethyl phosphate (ester) (8CI); 3,5,6-Trichloro-2-pyridyl dimethyl phosphate; Chlorpyrifos-methyl oxon; Dimethyl 3,5,6-trichloro-2-pyridyl phosphate; Dowco 217; Fospirat; Fospirate; Fospirate-methyl; O,O-Dimethyl O-(3,5,6-trichloro-2-pyridinyl) phosphate; O-(3,5,6-Trichloro-2-pyridinyl) O,O-dimethyl phosphate; Torelle