title: Electron-capture gas chromatography of sulphapyridine and its N4-acetyl metabolite in serum after extraction methylation.
mesh_terms: D000107:Acetylation; D002849:Chromatography, Gas; D008722:Methods; D008745:Methylation; D013424:Sulfanilamides / Q000097:blood*; D013427:Sulfapyridine / Q000097:blood*
chemical_list: D013424:Sulfanilamides; D013427:Sulfapyridine