"CAS:72-55-9" . "4,4'-DDE"@it . . . "4,4'-DDE — Codice CAS: 72-55-9"@it . . "2,2-bis(p-chlorophenyl)-1,1-dichloroethylene — CAS Identifier: 72-55-9"@en . "2,2-bis(p-chlorophenyl)-1,1-dichloroethylene"@en . . .