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2. Quantitative determination of theophylline in pharmaceutical dosage forms by differential spectrophotometry. Chae YS; Shelver WH J Pharm Sci; 1976 Aug; 65(8):1178-81. PubMed ID: 978437 [TBL] [Abstract][Full Text] [Related]
3. Determination of theophylline and its metabolites in human urine and serum by high-pressure liquid chromatography. Thompson RD; Nagasawa HT; Jenne JW J Lab Clin Med; 1974 Oct; 84(4):584-93. PubMed ID: 4412772 [No Abstract] [Full Text] [Related]
4. Chromatography of xanthines on ion-exchange resins. Walton HF; Eiceman GA; Otto JL J Chromatogr; 1979 Nov; 180(1):145-56. PubMed ID: 44303 [TBL] [Abstract][Full Text] [Related]
5. Ion-pair high-performance liquid chromatographic procedure for the quantitative analysis of theophylline in serum samples. Lauff JJ J Chromatogr; 1987 Jun; 417(1):99-109. PubMed ID: 3624406 [TBL] [Abstract][Full Text] [Related]
6. Effect of functional group substituents on the paper chromatography of purines and pyrimidines. Hedrick CE; Koeppel TA Anal Biochem; 1967 Jun; 19(3):411-7. PubMed ID: 6048152 [No Abstract] [Full Text] [Related]
7. GLC determination of theophylline in biological fluids. Shah VP; Riegelman S J Pharm Sci; 1974 Aug; 63(8):1283-5. PubMed ID: 4852204 [No Abstract] [Full Text] [Related]
8. Determination of theophylline and its metabolites by liquid chromatography. Desiraju RK; Sugita ET; Mayock RL J Chromatogr Sci; 1977 Dec; 15(12):563-8. PubMed ID: 591601 [TBL] [Abstract][Full Text] [Related]
9. Detection of theophylline and theobromine by reactions with mercury (II) cyanide. Feigl F; Goldstein D; Libergott E Anal Chim Acta; 1970 Mar; 49(3):573-4. PubMed ID: 5418353 [No Abstract] [Full Text] [Related]
10. Therapeutic drug monitoring using high-speed liquid chromatography and rapid sample preparation: an assay for serum theophylline. Bock JL; Lam S; Karmen A J Chromatogr; 1984 Jun; 308():354-8. PubMed ID: 6378950 [No Abstract] [Full Text] [Related]
11. Improved micro-method for the high-performance liquid chromatographic determination of caffeine and paraxanthine in biological fluids. Dorrbecker BR; Mercik SH; Kramer PA J Chromatogr; 1984 Dec; 336(2):293-300. PubMed ID: 6530461 [TBL] [Abstract][Full Text] [Related]
12. Gas-chromatographic micro-scale procedure for theophylline, with use of a nitrogen-sensitive detector. Least CJ; Johnson GF; Solomon HM Clin Chem; 1976 Jun; 22(6):765-8. PubMed ID: 1277458 [TBL] [Abstract][Full Text] [Related]
13. Effects of caffeine and theophylline on activity of rats in relation to brain xanthine concentrations. Thithapandha A; Maling HM; Gillette JR Proc Soc Exp Biol Med; 1972 Feb; 139(2):582-6. PubMed ID: 5059048 [No Abstract] [Full Text] [Related]
14. High-pressure liquid chromatographic and spectrophotometric assays for theophylline in biological fluids. Jusko WJ; Poliszczuk A Am J Hosp Pharm; 1976 Nov; 33(11):1193-6. PubMed ID: 998637 [TBL] [Abstract][Full Text] [Related]
15. Analytical methods for quantitation of methylxanthines. Hurst WJ; Martin RA; Tarka SM Prog Clin Biol Res; 1984; 158():17-28. PubMed ID: 6396643 [TBL] [Abstract][Full Text] [Related]
16. High-performance liquid chromatographic determination of theobromine, theophylline and caffeine in food products. Terada H; Sakabe Y J Chromatogr; 1984 May; 291():453-9. PubMed ID: 6736172 [No Abstract] [Full Text] [Related]
17. Determination of theophylline and probenecid in biological material. Arbin A; Edlund PO Acta Pharm Suec; 1974 Jun; 11(3):249-56. PubMed ID: 4839735 [No Abstract] [Full Text] [Related]
18. [Determination of substances of biochemical and bromatological interest by complex formation with heterpoly acids. The thermic properties of the complex salts]. Lóránt B Nahrung; 1974; 18(8):759-64. PubMed ID: 4464464 [No Abstract] [Full Text] [Related]
19. HPLC analysis of methylxanthines in human breast milk. Blanchard J; Weber CW; Shearer LE J Chromatogr Sci; 1990 Dec; 28(12):640-2. PubMed ID: 2292610 [TBL] [Abstract][Full Text] [Related]
20. A rapid and sensitive method for determination of theophylline in plasma and saliva by high pressure liquid chromatography. Peng GW; Smith V; Peng A; Chiou WL Res Commun Chem Pathol Pharmacol; 1976 Oct; 15(2):341-50. PubMed ID: 981789 [TBL] [Abstract][Full Text] [Related] [Next] [New Search]