Agilent manuals, page 156
Agilent Impurity Profiling with the Agilent 1200 Series LC System Part 1: Structure Elucidation of Impurities with LC/MS
This article introduces how to use Agilent 1200 series LC system for impurity analysis, and gives the structure elucidation method of impurities
Agilent Using nanospray HPLC-Chip/TOF for routine high senstivity metabolite identification
Nanospray LC-MS analysis of dextromethorphan (DEM) and its metabolites was performed using the Agilent 1200 Series HPLC-Chip/TOF system. The high sensitivity TOF in combination with automated nanospray HPLC-Chips enabled the detection of all DEM metabolites at concentration levels 100-fold lower than normal. The system response was linear over a wide concentration range for metabolites even when spiked into human plasma and urine. The LODs for real-life samples were in the high attomol to low femtomol range. Sample preparation was simplified using acidic precipitation by perchloric acid and a short centrifugation step. The simplified sample preparation, accurate mass measurements, excellent chromatographic reproducibility, and easy-to-use nanospray chip system make this setup optimal for routine use, allowing for higher throughput and reduced sample preparation costs.
Agilent Determination of Opioids Cocaine Cocaine Metabolites by Liquid Chromatography Mass Spectrometry Using ZORBAX Eclipse Plus C18 Columns
The document describes an improved method for analyzing opioids, cocaine, and cocaine metabolites from blood using solid phase extraction followed by LC/MS.
Agilent Chromatography of Nitrogen-Containing Compounds Without Triethylamine
This work demonstrates that Eclipse Plus C18 can be used for high-performance liquid chromatography (HPLC) separation of difficult to separate nitrogen-containing compounds without the use of triethylamine (TEA), which provides a new method for separating such compounds. In addition, the low end-group activity of Eclipse Plus C18 makes it a preferred HPLC column for analysis of pharmaceuticals and other amine-containing compounds.
Agilent Exploiting RRHT Columns with Different C18 Selectivities to Quickly Develop Methods for Endocannabinoids
This application describes how RRHT columns allowed for the rapid development of methods for selected endocannabinoids.
Agilent Performance of high-throughput high resolution LC MALDI spotting as a tool for protein identification
This Application Note describes the performance of the system using a 7-peptide sample and a tryptic digest of four different proteins.
Agilent The Analysis of Carbonate Associated Sulfur by 7500ce ORS-ICP-MS
This report outlines preliminary methodology and results for the analysis of four samples for all three isotopes of sulfur in carbonate matrices using the 7500ce Octopole Reaction System (ORS) with xenon as the cell gas. Xenon was used to react with oxygen in order to attenuate the O2-derived polyatomic interferences at masses 32, 33, and 34. Consequently, each sulfur isotope was analyzed on-mass, leading to highly reproducible results.
Agilent Improved Retention Time Area Repeatability Sensitivity for Analysis of Residual Solvents
This document discusses the risks of residual solvents in pharmaceutical products and the regulatory requirements from national and international bodies. The use of Agilent 7890A GC and Agilent G1888 automated headspace sampler allows for sensitive and accurate analysis of solvent residues. The document provides details on experimental conditions and instrument parameters.
Agilent Antibody Analysis by ESI-TOF LC/MS
This application note describes a method for analyzing antibody samples using an Agilent 1200 series HPLC coupled with a 6210 TOF MS. The results indicate that this method can quickly and accurately determine the molecular weight (MW) of antibodies and can resolve the various antibody subpopulations present in a sample.
Agilent Antibody analysis using the Protein 200 HT-2 Assay - A suitability test
This Application Note describes the analysis of different antibody sam- ples under reducing and non-reducing conditions.
Agilent Compendium of HPLC Applications for Traditional Chinese Medicine Chemical Drugs in China Pharmacopoeia
This document is a compendium of HPLC analysis methods for traditional Chinese medicine and chemical drugs in the China Pharmacopoeia. It includes HPLC analysis methods for traditional Chinese medicine from Volume I and chemical drugs from Volume II of the 2005 edition of the China Pharmacopoeia. The document highlights the selectivity and sensitivity of HPLC as an analysis technique, as well as its widespread adoption in the China Pharmacopoeia.
Agilent Distributor News
This document introduces Agilent's GC and LC column selection guides, which make it easier for customers to select the right columns using simple guides. Comprehensive column choices improve lab productivity, reduce method development time, and improve results.
Agilent Analysis of Anabolic Agents in Urine by LC/MS/MS
This document introduces the use of the Agilent 1200 Series liquid chromatography (LC) system coupled to the 6410 Triple Quadrupole Mass Spectrometer (QQQ) by way of the G1948B electrospray ionization (ESI) source, for the analysis of anabolic substances in urine.
Agilent High throughput LC/MS TOF analysis of drug degradation products
This Application Note describes the use of a high-throughput rapid resolution LC/MS TOF system for detection of impurities in a pharmaceutical formulation in more than 1000 samples per day. The instrument setup and a method for alternating column regeneration in a high-throughput LC system to reduce the overall analysis time by 50 % are also described.
Agilent Reliable Transfer of Existing Agilent 6890/5973 GC/MSD Methods to the New 7890/5975 GC/MSD
The document compares the performance of Agilent Technologies' new series of instruments, the 7890 Series GC and 5975 Series MSD, to the previous versions, the 6890 Series GC and the 5973 Series MSD. Performance is shown to be fully equivalent in test comparisons using a 16-component polynuclear aromatic hydrocarbon (PAH) sample. The document also discusses the reliable transfer of existing methods from the 6890/5973 system to the new 7890/5975 system.