Structures of mefenamic acid metabolites from human urine

Biol Pharm Bull. 1993 Aug;16(8):811-2. doi: 10.1248/bpb.16.811.

Abstract

Three major metabolites of mefenamic acid were isolated from the urine of a normal adult man receiving mefenamic acid orally. The structures of those metabolites were determined as glucuronides of mefenamic acid, its hydroxymethyl derivative, and its carboxylic acid derivative on the basis of spectral data.

MeSH terms

  • Adult
  • Biotransformation
  • Glucuronates / urine
  • Humans
  • Hydrolysis
  • Magnetic Resonance Spectroscopy
  • Male
  • Mefenamic Acid / analogs & derivatives
  • Mefenamic Acid / pharmacokinetics
  • Mefenamic Acid / urine*

Substances

  • 1-O-(2-(3-hydroxymethyl-2-methylphenyl)aminobenzoyl)glucopyranuronic acid
  • Glucuronates
  • 1-O-(2-(2,3-dimethylphenyl)aminobenzoyl)glucopyranuronic acid
  • 1-O-(2-(3-carboxy-2-methylphenyl)aminobenzoyl)glucopyranuronic acid
  • Mefenamic Acid