27315-91-9 3,5-Pyrazolidinedione, 4-butyl-4-((4-methyl-1-piperazinyl)methyl)-1,2-diphenyl- 4-Butyl-4-((4-methyl-1-piperazinyl)methyl)-1,2-diphenyl-3,5-pyrazolidinedione EINECS 248-398-7 LD 4644 Pipebuzona [INN-Spanish] Pipebuzone Pipebuzone [DCF:INN] Pipebuzonum [INN-Latin]