1,2,3,4,7,7-hexachloro-6,6-bis(chloromethyl)-5-methylidenebicyclo[2.2.1]heptane 1,4,5,6,7,7-hexachloro-2,2-bis(chloromethyl)-3-methylene-norbornane 1,4,5,6,7,7-hexachloro-2,2-bis(chloromethyl)-3-methylenenorbornane 1,2,3,4,7,7-hexachloro-6,6-bis(chloromethyl)-5-methylidene-bicyclo[2.2.1]heptane 8001-35-2 NCGC00091881-01 Toxaphene