2,2,5-endo,6-exo,8,9,10-Heptachlorobornane 5-endo,6-exo-2,2,5,6-Tetrachloro-1,7,7-tris(chloromethyl)-bicyclo(2.2.1)heptane 51775-36-1 BORNANE, 2,2,5-endo,6-exo,8,9,10-HEPTACHLORO- BRN 2212932 Bicyclo(2.2.1)heptane, 2,2,5,6-tetrachloro-1,7,7-tris(chloromethyl)-, (5-endo,6-exo)- Heptachlorobornane Sonatox Toxaphene toxicant B