(Bicyclohept-2-en-5-yl)methyldichlorosilane 18245-94-8 Bicyclo(2.2.1)hept-5-en-2-yldichloromethylsilane EINECS 242-122-9 Silane, bicyclo(2.2.1)hept-5-en-2-yldichloromethyl-