Studies on the metabolism of the antioxidant ethoxyquin, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline in the rat. 1979

J U Skaare, and E Solheim

1. The metabolism of ethoxyquin (6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline) in rat has been investigated. Urinary metabolites were identified by combined g.l.c.-mass spectrometry. 2. The major metabolic reaction was de-ethylation which gave rise to 6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline and an oxidation product, 2,2,4-trimethyl-6-quinolone. Other reactions were hydroxylation to four different hydroxylated metabolites and one dihydroxylated metabolite. A total of 95% of the dose (100 mg/kg) was accounted for.

UI MeSH Term Description Entries
D008297 Male Males
D008401 Gas Chromatography-Mass Spectrometry A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds. Chromatography, Gas-Liquid-Mass Spectrometry,Chromatography, Gas-Mass Spectrometry,GCMS,Spectrometry, Mass-Gas Chromatography,Spectrum Analysis, Mass-Gas Chromatography,Gas-Liquid Chromatography-Mass Spectrometry,Mass Spectrometry-Gas Chromatography,Chromatography, Gas Liquid Mass Spectrometry,Chromatography, Gas Mass Spectrometry,Chromatography, Mass Spectrometry-Gas,Chromatography-Mass Spectrometry, Gas,Chromatography-Mass Spectrometry, Gas-Liquid,Gas Chromatography Mass Spectrometry,Gas Liquid Chromatography Mass Spectrometry,Mass Spectrometry Gas Chromatography,Spectrometries, Mass-Gas Chromatography,Spectrometry, Gas Chromatography-Mass,Spectrometry, Gas-Liquid Chromatography-Mass,Spectrometry, Mass Gas Chromatography,Spectrometry-Gas Chromatography, Mass,Spectrum Analysis, Mass Gas Chromatography
D011804 Quinolines
D005015 Ethoxyquin Antioxidant; also a post-harvest dip to prevent scald on apples and pears. 1,2-Dihydro-6-Ethoxy-2,2,4-Trimethylquinoline,6-ETMDQ,6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline,Santoquin
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001711 Biotransformation The chemical alteration of an exogenous substance by or in a biological system. The alteration may inactivate the compound or it may result in the production of an active metabolite of an inactive parent compound. The alterations may be divided into METABOLIC DETOXICATION, PHASE I and METABOLIC DETOXICATION, PHASE II.
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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