129-18-0 3,5-Dioxo-1,2-diphenyl-4-n-butylpyrazolidin sodium 3,5-Pyrazolidinedione, 4-butyl-1,2-diphenyl-, monosodium salt 4-Butyl-1,2-diphenyl-3,5-pyrazolidinedione sodium salt 4-Butyl-1,2-diphenylpyrazolidine-3,5-dione, sodium salt Butazolidine sodium Diphenyldioxobutylpyrazolidine-butazolidine-sodium EINECS 204-935-7 GP26872 Phenylbutazone sodium Phenylbutazone sodium salt Sodium butazolidine Sodium phenylbutazone Sodium salt of phenylbutazone