Synonyms: Acetaldehyde, 2-(3,3-dimethylbicyclo(2.2.1)hept-2-ylidene)-, reaction products with Me Et ketone;(3,3-Dimethyl-2-norbornylidene)acetaldehyde, reaction product with methyl ethyl ketone;Acetaldehyde, (3,3-dimethylbicyclo(2.2.1)hept-2-ylidene)-, reaction products with Me Et ketone;(2E)-(3,3-dimethylbicyclo[2.2.1]hept-2-ylidene)ethanal - butan-2-one (1:1)