ODM2 Variable Name Controlled Vocabulary ODM2 Working Group A vocabulary for describing the name of Variables. 4,4-Methylenebis(2-chloroaniline) 4,4'-Methylenebis(2-chloroaniline) (C13H12Cl2N2) Originally from the CUAHSI HIS VariableNameCV. See: http://his.cuahsi.org/mastercvreg/edit_cv11.aspx?tbl=VariableNameCV.