1-Piperazineacetic acid, 4-(2-methylphenyl)-, ((3-bromo-5-hydroxy-4-methoxyphenyl)methylene) hydrazide 4-(o-Tolyl)-1-piperazineacetic acid ((3-bromo-5-hydroxy-4-methoxyphenyl)methylene)hydrazide 67041-11-6 BRN 0861936