Cyfen-d6; Dowco 214-d6; Dursban ME-d6; Dursban Methyl-d6; ENT 27520-d6; M 3196-d6; Methyl Dursban-d6; Methyl Chlorpyrifos-d6; Noltran-d6; O,O-Dimethyl O-(3,5,6-Trichloro-2-pyridyl) Phosphorothioate-d6; O,O-Dimethyl O-(3,5,6-Trichloro-2-pyridyl) Thiophosphate-d6; O-(3,5,6-Trichloro-2-pyridinyl) O,O-Dimethyl Phosphorothioate-d6; OMS 1155-d6; Reldan-d6; Chlorpyrifos M-d6; Chlorpyrifos-methyl-d6; O,O-Dimethyl O-(3,5,6-trichloro-2-pyridyl) Ester Phosphorothioic Acid-d6;