"(1?,2?,3?,4?,5?,6?)-1,2,3,4,5,6-hexachlorocyclohexane"@en . . "(1?,2?,3?,4?,5?,6?)-1,2,3,4,5,6-hexachlorocyclohexane — CAS Identifier: 319-86-8"@en . . . "HCH delta"@it . "HCH delta — Codice CAS: 319-86-8"@it . . "CAS:319-86-8" . .