2-Butylcyclohexanone O-(2-(dimethylamino)ethyl)oxime (E)-2-butenedioate (1:1) 2-n-Butyl-1-(2'-dimethylaminoethoxyimino)cyclohexane hydrogen fumarate 78674-82-5 Cyclohexanone, 2-butyl-, O-(2-(dimethylamino)ethyl)oxime, (E)-2-butenedioate (1:1)