ODM2 Variable Name Controlled Vocabulary ODM2 Working Group A vocabulary for describing the name of Variables. 2,2-dichlorovinyl dimethyl phosphate 2,2-dichlorovinyl dimethyl phosphate (C4H7Cl2O4P) Originally from the CUAHSI HIS VariableNameCV. See: http://his.cuahsi.org/mastercvreg/edit_cv11.aspx?tbl=VariableNameCV.