HPLC-UV/ESI-MS/MS
Stability profiling of anti malarial drug piperaquine phosphate and impurities by HPLC UV, TOF MS, ESI MS and NMR
... Twelve impurities of piperaquine phosphate bulk drug were detected by HPLC-UV/DAD, ESI-MS and TOF-MS. The structures of impurities were proposed on the basis of ESI-MS and ...
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BIOACTIVE COMPOUND IN CURCUMA CAESIA (ROXB ) FROM BASTAR AND ITS SPECTRAL ANALYSIS BY HPLC, UV VISIBLE, FT IR, NMR, AND ESI MS
... CONCLUSION: The present study was carried out to assess the antibacterial activity in the root, stem and leaf extracts of Curcuma caesia (Roxb.) against gram-positive and gram-negative bacteria. The results were ...
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Isolation and Characterization of Flavonols by HPLC UV ESI MS/MS from Talipariti elatum S w
... The red petals of the flowers of Talipariti elatum, commonly named majagua is used as antitussive, expectorant and antasthmatic in phytotherapy, although the plants’ composition has not been de- termined in detail so ...
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Chemical characterization of the main products formed through aqueous-phase photonitration of guaiacol
... Series HPLC system (equipped with a sol- vent degasser, quaternary pump, autosampler, thermostatted column compartment, UV/Vis diode-array detector (DAD), and an analytical-scale fraction collector (FC)) ...
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Chemical fingerprinting and quantitative analysis of a Panax notoginseng preparation using HPLC-UV and HPLC-MS
... This article reports a novel fingerprint analytical method for quality control of the XST injection, which may be applicable to other herbal products. Over the previous stu- dies [1-13], the new method features the ...
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Stability indicating HPLC DAD/UV ESI/MS impurity profiling of the anti malarial drug lumefantrine
... a HPLC-PDA apparatus consisting of a Waters Alliance 2695 separation module and a Waters 2998 photodiode array detector with Empower 2 soft- ware for data acquisition (all Waters, Milford, MA, ...the UV ...
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INVESTIGATIONS ON THE PHOTOLYSIS OF IMAZETHAPYR IN AQUEOUS SOLUTIONS UNDER DIRECT SUNLIGHT BY HPLC UV AND LC-MS/MS-ESI - APPLICATIONS OF GREEN ALGA AS A POTENTIAL BIOMARKER
... The Imazethapyr (purity 99.8%) reference analytical standard and the Imazethapyr water dispersible granule formulation (70%WG) commercial grade, obtained from the pesticide market outlet were used. HPLC grade ...
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Validation of a UHPLC-ESI-MS/MS Method for Anthocyanidin Quantification in Potato Tubers
... (both HPLC grade), ethanol absolute, and hydro- chloric acid (35%) were purchased from Lach-Ner (Czech ...Deionised HPLC grade water (≥ 18 MΩ) was prepared by Simplicity UV (EMD Millipore, ...
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Determining the degradation efficiency and mechanisms of ethyl violet using HPLC-PDA-ESI-MS and GC-MS
... tions of various pH values. At set intervals during the re- action, the solution was sampled. The residual dye and organic intermediates were analyzed using HPLC-PDA- ESI-MS and GC-MS. Dark ...
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Characterization of the anti Staphylococcus aureus fraction from Penthorum chinense Pursh stems
... A 100 μg/mL PGF methanol solution was analysed with a Dionex Ultimate 3000 high-performance liquid chro- matography (HPLC) System (Thermo Fisher Scientific, Waltham, USA) coupled with a diode array ultraviolet/ ...
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Screening for cytotoxic chemical constituents from Justicia procumbens by HPLC–DAD–ESI–MS and NMR
... The HPLC analysis was performed using an Agilent 1260 Infinity system (Agilent, America). Chromatographic separations of the analytes were carried out using a Syn- ergi Polar-RP 80 A column (4.6 mm × 250 mm, 4 μm ...
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Characterization and antioxidant activity of carotenoid mixtures present in Rhodococcus sp and Gordonia sp
... A HPLC carotenoid quantification method was developed, where antioxidant activity with 2,2-diphenyl-1-picrylhidrazyl (DPPH) radical was performed to calculate the inhibitory concentration 50 (IC 50 ) of each ...
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Analytical Methods of Six FDA Approved Molecular Entities Used for the Treatment of Non-Small Cell Lung Cancer: A Concise Review
... This review is revealed at focusing the role of various analytical instruments in the assay of pharmaceuticals and giving a thorough literature survey of the analytical methods involved in the determination of API ...
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In Vitro Antioxidant and Antimicrobial Properties of Murraya Paniculata L Extracts as well as Identification of Their Active Secondary Metabolites by HPLC ESI MS
... extracts. HPLC-ESI-MS analysis of MeOH extract and its derived fractions (EtOAc and BuOH) demonstrated the presence of three major bioactive compounds, ...
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Qualitative and Quantitative Analysis of Five Bioactive Flavonoids in Salix bordensis Turcz by HPLC DAD and HPLC ESI MS
... and quantitative analyses of five bioactive flavonoids in Salix bordensis Turcz. The evaluated parameters dem- onstrated that the methods offer good specificity, linearity, accuracy, and precision within acceptable ...
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Photoelectrocatalytic Oxidation of Ethinylestradiol on a Ti/TiO2 Electrode: Degradation Efficiency and Search for By Products
... Degradation of EE: ESI-MS Monitoring Direct infusion electrospray ionization mass spectrometry in the negative ion mode, ESI--MS, was also applied to monitor not only the substrate consu[r] ...
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Measurement of methionine level with the LC-ESI-MS/MS method in schizophrenic patients
... Other important parameters of application studies include the LOD and the LOQ, with lower values for these parameters indicating higher sen- sitivity [10, 11]. In the current study, the LOD and LOQ were determined as ...
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Exorphin Peptides In Urine With Hplc-Ms/Ms Detection
... purity. HPLC-grade deionized water, acetonitrile, isopropanol, formic acid, acetic acid, citric acid, boric acid, hydrochloric acid, trifluoroacetic acid were obtained from ...
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UV-Spectrophotometry - Multicomponent Mode of Analysis for Simultaneous Estimation of Brinzolamide and Brimonidine Tartrate in Bulk and Ophthalmic Formulation
... as UV-Spectrophotometry [4, 6], HPLC [5, 7, 11], HPTLC [8, 6], LC-MS/MS [9] and Stability- Indicating UPLC [10] methods for measurement of BRZ and BT alone and in combination with other ...
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Identification of hydrolysable tannins in the reaction zone of Eucalyptus nitens wood by high performance liquid chromatrography electrospray ionisation mass spectrometry
... the MS-MS evidence of intense ions at m/z 301 and ...their MS-MS spectra. The MS-MS daughters of the casuarinin [M ÿ H] ÿ ion showed a strong ion (30% relative abundance) ...
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