| Title:  Butibufen CAS Registry Number:  55837-18-8 CAS Name:  a-Ethyl-4-(2-methylpropyl)benzeneacetic acid Additional Names:  2-(4-isobutylphenyl)butyric acid Trademarks:  Butilopan (Juste) Molecular Formula:  C14H20O2 Molecular Weight:  220.31 Percent Composition:  C 76.32%, H 9.15%, O 14.52% Literature References:  Prepn:  L. Aparicio et al., DE 2505813; eidem, US 4031243 (1976, 1977 both to Juste); J. M. Carretero et al., Eur. J. Med. Chem. 13, 77 (1978).  Pharmacology:  L. Aparicio, Arch. Int. Pharmacodyn. Ther. 227, 130 (1977).  Pharmacokinetics:  R. Revilla De Granda et al., An. R. Acad. Farm. 43, 419 (1977), C.A. 88, 83349 (1978).  HPLC determination:  L. González Tavares et al., Arzneim.-Forsch. 42, 818 (1992). Properties:  Solid, mp 51-53°.  LD50 orally in mice:  810 mg/kg (Carretero). Melting point:  mp 51-53° Toxicity data:  LD50 orally in mice:  810 mg/kg (Carretero) Therap-Cat:  Anti-inflammatory. Keywords:  Anti-inflammatory (Nonsteroidal); Arylbutyric Acid Derivatives.  |