title: Gas chromatographic determination of 7-(beta-hydroxypropyl) theophylline in biological fluids.
mesh_terms: D002849:Chromatography, Gas; D008722:Methods; D010949:Plasma; D013806:Theophylline / Q000097:blood / Q000302:isolation & purification* / Q000652:urine; D013997:Time Factors
chemical_list: D013806:Theophylline