1,2-Diphenyl-3,5-dioxo-4-n-butylpyrrazolidine de piperazine [French] 3,5-Pyrazolidinedione, 4-butyl-1,2-diphenyl-, compd. with piperazine (1:1) 4-Butyl-1,2-diphenyl-3,5-pyrazolidinedione compd. with piperazine (1:1) 4-Butyl-1,2-diphenylpyrazolidine-3,5-dione, compound with piperazine (1:1) 4985-25-5 Carudol DB 139 EINECS 225-639-4 Pyrasanone Pyrazinobutazone Ranoroc