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132 matches found for derivatizations

Fluorescent Nanodiamond Particles Containing Color Centers: Properties and Applications

Nanodiamond (ND) particles are increasingly being utilized as diagnostic, imaging, and therapeutic agents in biomedicine,1 for cryptography and quantum computing in quantum information processing, and as single-spin sensors in nanomagnetometry.2,3 Most of these applications are based on the unique o...

Technical Literature for Derivatization Reagents

General Literature & Books Handbook of Analytical Derivatization Reactions – D. Knapp Guide to Derivatization Reagents for Gas Chromatography (GC) Handbook of Derivatization reagents for HPLC (Book & CD) - Lunn & Hellwig Silylation Reagents BSA (PDF 107 KB) BSA + TMCS (PDF 108 KB) BSA + TMCS + TMSI ...

Chitosan: A Versatile Platform for Pharmaceutical Applications

Raphael Riva and Christine Jerome* Center for Education and Research on Macromolecules University of Liege, Chemistry Department, Sart-Tilman, Building B6a, 4000 Liege, Belgium *Email: c.jerome@ulg.ac.be The development of new medical devices and pharmaceuticals plays an integral role in the medical...

Silylation Derivatization Reagent

Silylation is the most widely used derivatization technique. Nearly all functional groups which present a problem in gas chromatogaphic separation (hydroxyl, carboxylic acid, amine, thiol, phosphate) can be derivatized by silylation reagents. It involves the replacement of an acidic hydrogen on the ...

Microparticle Synthesis & Properties

Synthesis of MF-polymer particles Monodisperse melamine resin particles are a new class of polymer particles with excellent physical and chemical properties. In contrast to the synthesis of polystyrene particles, melamine resin microspheres are manufactured by hydro-thermal acid-catalyzed polyconden...

Fluorescent Microparticles in Biochemistry

Fluorescently labeled particles are useful as standards in flow cytometry, confocal laser scanning microscopy, and with light scattering instruments. They also have been used in environmental science as tracers in flow measurements of gases and liquids, such as laser Doppler anemometry (LDA), partic...

Frequently Asked Questions – Analytical Chemistry Products

The following links provide information or answers relating to frequently asked questions (FAQs) about our consumables and services for analytical chemistry. See Also: Helpful Guides If you need additional information, or would like to make a custom product request, please contact us! You can reach ...

Analysis of Metabolites by HPLC

Related Articles Fast HPLC Using Fused-Core® Particle Technology for Rapid Screening of Pharmaceutical Compounds Serum Lipidomics Profiling using an Ascentis Express Fused-Core C18 Column Fast LC-MS-MS Analysis of 25-Hydroxyvitamin D2 and 25-Hydroxyvitamin D3 Alternative Retention and Selectivity Us...

Using SPME in the Analysis of Drugs of Abuse

Related Articles • Chiral Analysis of Levamisole and its Metabolite, Aminorex, for Monitoring Abuse in Horse Racing and Cocaine Adulteration • Utilizing Novel SPME LC Tips for Forensic Screening of Drugs of Abuse in Urine Samples • Accurate Biological Testing for Amphetamine and Methamphetamine Abus...

Fouling Resistant Biomimetic Poly(Ethylene Glycol) Based Grafted Polymer Coatings

• • Download PDF • Biomedical Engineering Department Northwestern University Evanston, IL philm@northwestern.edu Accumulation of biological matter at surfaces is an inevitable event in virtually any environment in which natural and man-made materials are used. Although sometimes fouling of surfaces ...

Helpful Guides

Air Monitoring Chemical Standards Gas Chromatography Gas Management HPLC and LPLC Purge and Trap Solid Phase Extraction Solid Phase Microextraction Download PDF Product Name Subject PDF file size No. of Pages Air Monitoring t110873 Bulletin 873 Thermal Desorption Applications Guide for Model 890/891...

Astec Chiral Chromatography Bibliography by Subject

Amino Acids, Peptides, Biomolecules Chemical, Environmental, Petrochemical Chiral LC-MS Food, Beverage, Natural Products Mechanistic Studies Pharmaceutical, Clinical Preparative, SFC, SMB Daniel W. Armstrong Publications Copyright restrictions do not permit us to provide copies of the articles liste...

Interlaboratory proficiency testing on the analysis of alkylphenols, alkylphenol ethoxylates and Bisphenol A in surface and waste waters according to ISO/CD 18857-2 using new 13C-marked internal standards

• • Download PDF • Member of Working Group DIN NA 119-01-03-02-02 “Phenols with GC” Convener of Working Groups ISO TC 147/SC 2/ WG 17 “Phenols” and DIN NA 119-01-03-02-02 “Phenols with GC” As reported previously1, alkylphenols and their shortchain ethoxylates have considerable environmental relevanc...

Improved Detection & Identification using MSTFA/MSTFA-d9 Derivatization - GC/MS Case Study of Amphetamine

Related Articles • Reporter US Volume 30.1 (2 Mb PDF) • The Use of Derivatization Reagents for GC • Derivatization and Separation of Aliphatic Amines • Derivatization Agents for LC/MS – An Improved Detection of Estradiol with ESI-MS • HPLC Derivatization Reagents: Dabsyl Chloride The following was g...

Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling

• • Download PDF • Workplace exposures to acetic acid vapors can cause irritation to eyes and mucous membranes, chronic bronchitis and asthma (1,2,3). The American Conference of Governmental Industrial Hygienists (ACGIH) proposed 25 mg/m3 TLV-TWA (time-weighted average) and 37 mg/m3 TLV-STEL (short-...

High-Performance Thin-Layer Chromatography: A Fast and Efficient Fingerprint Analysis Method for Medicinal Plants

Ginsenosides are triterpene saponins. Most ginsenosides are composed of a dammarane skeleton (17 carbons in a four-ring structure) with various sugar moieties (e.g. glucose, rhamnose, xylose and arabinose) attached to the C- 3 and C-20 positions. Over 30 ginsenosides have been identified and classif...

Protocol KitAlysis™ High-Throughput Miyaura Borylation Reaction Screening Kit

2 bases (KOAc, DIEA) 6 degassed solvents (toluene, DMA, THF, n-butanol, MeOH, MeCN) 6 pre-weighed catalysts (x4) Materials Required - Set up: • 1 mylar bag from the KitAlysis™ High-Throughput Miyaura Borylation Reaction Screening Kit and you will use the following components - 6 x 4 pre-weighed cata...

Accurate Biological Testing for Amphetamine and Methamphetamine Abuse Using Chiral HPLC and MS Detection

Related Articles • Accurate Biological Testing for Amphetamine and Methamphetamine Abuse Using Chiral HPLC and MS Detection (PDF) • SPE Method to Eliminate Matrix Effect in Analysis of NBOMe Hallucinogens from Urine • UHPLC/MS of Drugs and Metabolites in Urine following Enzymatic Hydrolysis • Utiliz...

Analytical Reagents and Solvents

We offer analytical reagents for wet chemistry, chromatography, spectroscopy, analytical microbiology, microscopy, titration, water quality control, and electrochemistry. Our offering includes high purity acids, bases, and solvents, and specialty reagents for a number of analytical applications, suc...

Supelco Reporter Newsletters, 2012

2012 Volume 30.1 (January) Reporter 30.1 (t212001) Download PDF (2.2 MB) Feature Article: SPME-GC-MS Procedure for the Determination of Phthalate Esters in Ramen Noodle Flavor Packets Pharmaceutical & Bionanalysis: Sensitive Determination of L- and D-Lactic Acid Enantiomers by HPLC-MS-MS Improved Co...

Standards for Biodiesel Analysis

Biodiesel fuel must conform to ASTM D6751 specifications for use in diesel engines. Testing for this confirmation is outlined in ASTM D6584 and similar method DIN EN 14105. These methods provide for the quantitative determination of free and total glycerin in 100% biodiesel fuel (B100 methyl esters)...

Supelco Reporter Newsletter Archives, 2005-2010

2010 Volume 28.5 (Dec.) Volume 28.4 (Sep.) Volume 28.3 (July) Volume 28.2 (April) Volume 28.1 (Feb.) 2009 Volume 27.5 (Oct.) Volume 27.4 (Aug.) Volume 27.3 (June) Volume 27.2 (April) Volume 27.1 (Feb.) 2008 2007 2006 2005 2010 Reporter 28.5 (t210005) Download PDF (2 MB) • Feature Article: Alternativ...

NIOSH 7605– Products and Materials Guide

CHROMIUM, HEXAVALENT by Ion Chromatography This method can be used for the determination of Cr(VI) using 2% NaOH - 3%Na2CO3for extraction. All sample preparation should be performed in a hood. Chromium Hexavalent are chemical compounds that contain choromium in the +6 oxidation state. Hexavalent chr...

Greener Alternatives Evaluation Matrix

Launch DOZN Tool Our approach to evaluating greener chemicals is based on the 12 Principles of Green Chemistry. We recognize that these principles distill into three major categories: improving resource use, more efficient use of energy, and minimizing human and environmental hazards. At present, we...

Forensic Testing

With the highest quality reagents and chemicals, we are the supplier of choice to the research community. We now bring that same quality and diversity of products for the forensic testing of therapeutic and illicit drugs, alcohol and other toxic chemicals, so you can maintain the highest levels of q...

Glycan Labeling

Glycobiology Analysis Manual Table of Contents GlycoProfile™ Products for Metabolic Glycan Labeling FLAG® Antibodies for Detection of FLAG-labeled Glycans GlycoProfile™ Labeling Kits Fluorophores Chromophores Additional Reagents for Reductive Amination Structural modifications of proteins are essent...

ASSET EZ4-NCO Analysis of Isocyanates

Introduction Isocyanates are used as a raw material to produce a number of products such as automotive paints, rigid and spray foam insulation, and furniture. Personal exposure can occur while the products made with isocyanates are being applied, or when the materials are removed by grinding or ther...

Trans Fats in Cookies using SP-2560 and SLB-IL111

Trans fats (trans unsaturated fatty acids) are fatty acids that contain at least one double bond in the trans orientation. This orientation causes carbon atoms to align in a straight configuration, similar to saturated fatty acids. Most naturally occurring unsaturated fatty acids have double bonds i...

Environmental Testing - Organics

Sample preparation involves partitioning organic pollutants into headspace through a purge process (for volatile organics) or into an organic solvent through an extraction process (for non-volatile organics). A cleanup step to remove interferences and/or a concentration step to increase method sensi...

Identifying metabolites by integrating metabolome databases with mass spectrometry cheminformatics

Nature Methods Volume 15 Issue 1, 27 January 2018, Pages 53 - 56 doi: 10.1038/nmeth.4512 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. Zijuan Lai a, b , Hiroshi Tsugawa c, d , Gert Wohlgemuth a , Sajjan Mehta a , Matthew Mueller a , Yuxuan Zheng b , Atsush...