1-Piperazineacetic acid, 4-methyl-, ((5-nitro-2-furanyl)methylene)hydrazine, dihydrochloride 1-Piperazineacetic acid, 4-methyl-, (5-nitrofurfurylidene)hydrazide, dihydrochloride 24632-47-1 24632-48-2 4-Methyl-1-piperazineacetic acid (5-nitrofurfurylidene)hydrazide dihydrochloride Nifurpipone dihydrochloride