Pesticide & InsecticidesChina O, O′ -Diethylthiophosphoryl Chloride [Detcl] [Chlorpyrifos Intermediate] [CAS: 40497-11-8], Find details about China O O-Diethylthiophosphoryl Chloride, Detcl from O, O′ -Diethylthiophosphoryl Chloride [Detcl] [Chlorpyrifos Intermediate] [CAS: 40497-11-8]