2-Norbornanone, 3-methyl-3-nitro-, O-(methylcarbamoyl)oxime 20417-92-9 3-Methyl-3-nitrobicyclo(2.2.1)heptan-2-one O-((methylamino)carbonyl)oxime BRN 2476273 Bicyclo(2.2.1)heptan-2-one, 3-methyl-3-nitro-, O-((methylamino)carbonyl)oxime ENT 27,301 UC-22878 Union carbide UC-22878