1-Piperazineacetamide, N-(4-(dimethylamino)phenyl)-4-methyl-, (Z)-2-butenedioate (1:2), 1/2H2O 118989-80-3 Acetamide, N-(4-(dimethylamino)phenyl)-2-(4-methyl-1-piperazinyl)-, (Z)-2-butenedioate, hydrate (2:4:1) N-(4-Dimethylaminophenyl)-2-(4-methyl-1-piperazinyl)acetamide dimaleate hemihydrate