UNII-2B2ZV6F5HG, Pipebuzonum, 4-butyl-4-(4-methyl-piperazin-1-ylmethyl)-1,2-diphenyl-pyrazolidine-3,5-dione, Pipebuzona [INN-Spanish], Pipebuzonum [INN-Latin], Pipebuzona, 4-Butyl-4-((4-methyl-1-piperazinyl)methyl)-1,2-diphenyl-3,5-pyrazolidinedione, Pipebuzone