177771-99-2 3,4,4a,5,8,8a-Hexahydro-3',7 (or 6)-dimethylspiro(1,4-methanonaphthalene-2(1H),2'-oxirane) 3,4,4a,5,8,8a-Hexahydro-3',7'-dimethylspiro(1,4-methanonaphthalene-2(1H),2'-oxirane) 41816-03-9 EINECS 255-560-0 Spiro(1,4-methanonaphthalene-2(1H),2'-oxirane), 3,4,4a,5,8,8a-hexahydro-3',7-dimethyl-