We describe a quantitative assay for diaminopimelic acid (DAP) in urine. It involves (i) hydrolysis of urine samples, (ii) purification by several different liquid chromatography steps, and (iii) analysis by high-performance liquid chromatography on a reversed-phase C18 column. Tritiated-DAP, the in
A rapid method for the identification of amino acid phenylthiohydantoins by high performance liquid chromatography
✍ Scribed by Földi, J. ;Valentin, C. ;Cohen-Solal, M.
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 141 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Thin-layer chromatogram (6 x 6 cm) of the model mixture: (1) inorganic phosphate, (2) choline, (3) choline phosphate, (4) glycerophosphorylcholine, (5) glycerophosphate, (6) betaine. Solvent systems: First direction (vertical), methanol/water/conc. NH4 OH/chlorotorm/acetone (5 : 2 : 1 : 2 : 2); Second direction (horizontal) methanol/water/conc. NH40H (5 : 3 : 1).
Visualization was rendered with iodine vapours (the second and the sixth spots) and malachite green reagent consecutively.
MS
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