2-(2-(2-Methylphenyl)ethyl)morpholine (Z)-2-butenedioate (2:1) 2-(beta-(2-Methylphenyl)ethyl)morpholine hydrogen maleate (2:1) 58039-75-1 Morpholine, 2-(2-(2-methylphenyl)ethyl)-, (Z)-2-butenedioate (2:1)