581300-U

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Showing 1-11 of 11 results for "581300-U" within Papers

A new method based on supercritical fluid extraction for polyacetylenes and polyenes from Echinacea pallida (Nutt.) Nutt. roots.

Massimo Tacchini et al.

Journal of pharmaceutical and biomedical analysis, 146, 1-6 (2017-08-26)

The genus Echinacea (Asteraceae) includes species traditionally used in phytotherapy. Among them, Echinacea pallida (Nutt.) Nutt. root extracts are characterized by a representative antiproliferative activity, due to the presence of acetylenic compounds. In this study, supercritical fluid extraction (SFE) was

Simultaneous metabolite fingerprinting of hydrophilic and lipophilic compounds in Echinacea pallida by high-performance liquid chromatography with diode array and electrospray ionization-mass spectrometry detection.

Federica Pellati et al.

Journal of chromatography. A, 1242, 43-58 (2012-05-09)

In this study, a detailed phytochemical characterization of Echinacea pallida (Nutt.) Nutt. root extracts and dietary supplements was carried out for the first time by developing advanced chromatographic techniques, based on HPLC with diode array (DAD) and electrospray ionization-mass spectrometry

HPLC column-switching technique for sample preparation and fluorescence determination of propranolol in urine using fused-core columns in both dimensions.

Dalibor Satínský et al.

Analytical and bioanalytical chemistry, 405(20), 6583-6587 (2013-06-12)

A new and fast high-performance liquid chromatography (HPLC) column-switching method using fused-core columns in both dimensions for sample preconcentration and determination of propranolol in human urine has been developed. On-line sample pretreatment and propranolol preconcentration were performed on an Ascentis

Development and validation of a LC-MS method with electrospray ionization for the determination of the imidazole H3 antagonist ROS203 in rat plasma.

Federica Vacondio et al.

Journal of pharmaceutical and biomedical analysis, 46(1), 200-205 (2007-10-26)

A rapid, simple and sensitive liquid chromatography-mass spectrometry (LC-MS) method was developed and validated for the determination of the imidazole H(3) antagonist ROS203 in rat plasma, using the superior homologue ROS287 as internal standard. Analyses were performed on an Agilent

Bioanalytical LC-MS/MS method validation for plasma determination of topiramate in healthy Indian volunteers.

Dipanjan Goswami et al.

Biomedical chromatography : BMC, 23(11), 1227-1241 (2009-07-14)

A LC-MS/MS method for plasma topiramate analysis is delineated involving least number of healthy volunteers. Topiramate and amlodipine internal standard (IS) were extracted by simple centrifuge-coupled solid-phase extraction and reverse-phase chromatographic separation was performed on an Ascentis C(18) column. Turbo-spray

Recent trends in ultra-fast HPLC: new generation superficially porous silica columns.

Imran Ali et al.

Journal of separation science, 35(23), 3235-3249 (2012-11-28)

New generation columns, i.e. packed with superficially porous silica particles are available as trade names with following manufacturers: Halo, Ascentis Express, Proshell 120, Kinetex, Accucore, Sunshell, and Nucleoshell. These provide ultra-fast HPLC separations for a variety of compounds with moderate

Pharmacokinetic study of calenduloside E and its active metabolite oleanolic acid in beagle dog using liquid chromatography-tandem mass spectrometry.

Meiyun Shi et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 951-952, 129-134 (2014-02-22)

Aralia mandshrica is a well-known traditional Chinese medicine from Northeast China commonly used to treat digestive, circulatory and immune system disorders. Calenduloside E is one of its bioactive components currently under evaluation as a pure drug. In this study, a

A study of retention characteristics and quality control of nutraceuticals containing resveratrol and polydatin using fused-core column chromatography.

Jakub Fibigr et al.

Journal of pharmaceutical and biomedical analysis, 120, 112-119 (2016-01-01)

A new high-performance liquid chromatography method using fused-core column for fast separation of resveratrol and polydatin has been developed and used for quality control of nutraceuticals with resveratrol and polydatin content. Retention characteristics (log k) were studied under different conditions

HPLC-DAD and HPLC-ESI-MS/MS methods for metabolite profiling of propolis extracts.

Federica Pellati et al.

Journal of pharmaceutical and biomedical analysis, 55(5), 934-948 (2011-04-19)

In this study, the composition of polyphenols (phenolic acids and flavonoids) in propolis extracts was investigated by HPLC-DAD and HPLC-ESI-MS/MS by comparing the performance of ion trap and triple quadrupole mass analyzers. The analyses were carried out on an Ascentis

An on-line SPE-HPLC method for effective sample preconcentration and determination of fenoxycarb and cis, trans-permethrin in surface waters.

Dalibor Šatínský et al.

Talanta, 142, 124-130 (2015-05-25)

A new on-line SPE-HPLC method using fused-core columns for on-line solid phase extraction and large volume sample injection for increasing the sensitivity of detection was developed for the determination of insecticides fenoxycarb and cis-, trans-permethrin in surface waters. The separation

Practical comparison of LC columns packed with different superficially porous particles for the separation of small molecules and medium size natural products.

Peilin Yang et al.

Journal of separation science, 34(21), 2975-2982 (2011-09-22)

Commercial C(18) columns packed with superficially porous particles of different sizes and shell thicknesses (Ascentis Express, Kinetex, and Poroshell 120) or sub-2-μm totally porous particles (Acquity BEH) were systematically compared using a small molecule mixture and a complex natural product

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