Formation of formaldehyde adducts from various drugs by use of methanol in a toxicological screening procedure with gas chromatography-mass spectrometry.
Use of methanol as a solvent in a toxicological screening procedure with gas chromatography-mass spectrometry may be associated with artifact formation. Artifacts with a molecular ion of [M + 12]+ are formed from various drugs, such as amphetamine, propafenone, flecainide, beta-blockers and prilocaine. The mechanism of artifact formation was studied by mass spectral techniques, labelling and nuclear magnetic resonance spectroscopy. It was shown that the artifacts were generated by the addition of formaldehyde and subsequent loss of water. Formaldehyde is probably formed by thermal dehydrogenation of methanol in the injection port of the gas chromatograph.
Reanimationszentrum, Klinikum Rudolf Virchow, Standort Charlottenburg, Freie Universität Berlin, F.R.G.
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Köppel
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Tenczer
K M
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Peixoto-Menezes
D000319:Adrenergic beta-Antagonists / Q000506:poisoning / Q000652:urine*; D005424:Flecainide / Q000506:poisoning / Q000652:urine*; D005557:Formaldehyde; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D011041:Poisoning / Q000652:urine*; D011318:Prilocaine / Q000506:poisoning / Q000652:urine*; D011405:Propafenone / Q000506:poisoning / Q000652:urine*
D000319:Adrenergic beta-Antagonists; D007202:Indicators and Reagents; D011318:Prilocaine; D005557:Formaldehyde; D011405:Propafenone; D005424:Flecainide