2-Norbornanone, 3-(2,2,2-trifluoro-1-trifluoromethylethylidene)- 3-((2,2,2-Trifluoro-1-trifluoromethyl)ethylidene)bicyclo(2.2.1)heptan-2-one 3-(2,2,2-Trifluoro-1-trifluoromethylethylidene)-2-norbornanone 35444-16-7 BRN 2146028 NSC 160215