19916-65-5 2,2-Dichlorobicyclo(2.2.1)heptane 2,2-Dichloronorbornane 67844-25-1 Bicyclo(2.2.1)heptane, 2,2-dichloro- EINECS 243-425-9 NSC 176179 Norbornane, 2,2-dichloro-