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pro vyhledávání: '"U R, Cieri"'
Autor:
U R, Cieri
Publikováno v:
Journal of AOAC International. 81(2)
A liquid chromatographic (LC) method for determining reserpine and rescinnamine in Rauwolfia serpentine powders and tablets, which uses fluorescence detection, was subjected to a collaborative study. The procedure for extraction and purification is a
Autor:
U R, Cieri
Publikováno v:
Journal of AOAC International. 78(6)
A procedure is presented for determination of reserpine and chlorothiazide in commercial tablets by liquid chromatography (LC). Powdered sample, equivalent to the weight of one tablet, is dissolved in 10.0 mL dimethyl sulfoxide, the mixture is dilute
Autor:
U R, Cieri
Publikováno v:
Journal of AOAC International. 78(4)
A method is presented for determination of ajmalicine in reserpine raw materials by liquid chromatography (LC) with fluorescence detection. The sample is dissolved in a very small volume of chloroform, and the resulting solution is diluted with metha
Autor:
U R, Cieri
Publikováno v:
Journal of AOAC International. 77(3)
A procedure is presented for the determination of reserpine in tablets by liquid chromatography (LC) that is a slight modification of a method presented in a previous publication. The sample is extracted with methanol, and solutions are filtered thro
Determination of ergotamine tartrate in tablets by liquid chromatography with fluorescence detection
Autor:
U R, Cieri
Publikováno v:
Journal - Association of Official Analytical Chemists. 70(3)
A method is presented for the liquid chromatographic (LC) determination of ergotamine tartrate in tablets that is applicable even in the presence of other ingredients such as phenobarbital, belladonna alkaloids, and caffeine. The sample is transferre
Autor:
U R, Cieri
Publikováno v:
Journal - Association of Official Analytical Chemists. 63(4)
Autor:
U R, Cieri
Publikováno v:
Journal - Association of Official Analytical Chemists. 57(2)
Autor:
U R, Cieri, J C, Illuminati
Publikováno v:
Journal - Association of Official Analytical Chemists. 60(3)
A method is presented for the detection and semiquantitative estimation of thyroxine and diiodothyronine in liothyronine sodium. Thyroxine is detected by thin layer chromatography, using silica gel H plates developed in butanol-acetone-ammonia (30 +
Autor:
U R, Cieri
Publikováno v:
Journal - Association of Official Analytical Chemists. 68(3)
A procedure is presented for the determination of reserpine in commercial tablets by liquid chromatography (LC). The sample is extracted with methanol if only reserpine is present. If the sample contains other ingredients, CHCI3 is used for extractio
Autor:
U R, Cieri
Publikováno v:
Journal - Association of Official Analytical Chemists. 62(1)
The feed sample is extracted with acetone or dimethylformamide-acetone (1 + 1) and the filtered extracts are evaporated to dryness. The residue is dissolved in chloroform and transferred to a silica gel column. The nitrofurans are eluted with methano