6231. Mofebutazone

Nomenclature

CAS number: 2210-63-1
4-Butyl-1-phenyl-3,5-pyrazolidinedione; 4-butyl-1-phenyl-3,5-dioxopyrazolidine; 2-phenyl-3,5-dihydroxy-4-butylpyrazolidine; monophenylbutazone; Arcomonol Tablets; Mobutazon; Mobuzon; Mofesal (Medice); Monazan; Monobutyl; Monorheumetten (Benzon); Reumatox.
C13H16N2O2; mol wt 232.28.
C 67.22%, H 6.94%, N 12.06%, O 13.78%.

Description and references

Prepn: Büchi et al., Helv. Chim. Acta 36, 75 (1953); GB 839057 (1960 to Comm. Farm. Milanese). Toxicity data: Schoetensack, Arch. Exp. Pathol. Pharmakol. 233, 365 (1958).

Chemical structure

Properties

Crystals from ethanol + water, mp 102-103°. uv max (ethanol): 240, 275 nm (E1%1cm 443, 245). LD50 i.v. in mice: 600 mg/kg (Schoetensack).

Therapeutic Category

Anti-inflammatory.

Keywords

Anti-inflammatory (Nonsteroidal); Pyrazolones