Synonyms: Cyclohexane,1,2,3,4,5,6-hexachloro-, a- (8CI); (?à)-a-HCH; (?à)-a-Hexachlorocyclohexane; a-1,2,3,4,5,6-Hexachlorocyclohexane; a-666; a-BHC; a-Benzenehexachloride; a-Benzohexachloride; a-HCH; a-Hexachloran; a-Hexachlorane; a-Hexachlorcyclohexane; a-Hexachlorocyclohexane; a-Lindane