1-(N-Isobutyl)benzimidoyl-4-(N-hexyl)piperazine dimaleate 1-Hexyl-4-(N-isobutylbenzimidoyl)piperazine maleate (1:2) 51481-63-1 BUCAINIDE MALEATE Bucainide maleate [USAN] Piperazine, 1-hexyl-4-(((2-methylpropyl)imino)phenylmethyl)-, (Z)-2-butenedioate (1:2) RHC G 233 USVP G 233