Our comprehensive portfolio of spectroscopy materials includes reagents for analyses by different techniques such as fluorescence/luminescence spectroscopy, nuclear magnetic resonance spectroscopy, infrared (IR) spectroscopy, and UV/Visible (UV/Vis) spectroscopy. No trace of UV, IR, or fluorescence active components.Produced using premium-quality raw materials and subjected to stringent purification procedures.Subsequently, solid-phase extraction was performed on sample solutions, and the extracted substances were then analyzed by high-performance liquid chromatography. Optical and chemical purity with batch-to-batch reproducibility The structural characteristics of metal-organic frameworks/melamine sponges were first analyzed by scanning electron microscopy.Our high-purity reagents are designed to offer reliable and accurate results, while eliminating the need for repeat analyses. Reagents for SpectroscopyĪnalytical spectra are influenced by the purity of solvents and reagents used in sample preparation. We also offer accessories, additives, buffers, chromoionophores, electrolytes, ion standard solutions, ionic strength adjustor solutions (ISA), ionophore cocktails, plasticizers, polymers, ready-to-use membranes, silanizing agents, and solvents for ion-selective electrode preparation. Our Selectophore™ product line can be used to prepare sensor membranes for ion-selective and optical devices. We offer a comprehensive portfolio of derivatization agents for various chromatography applications, including reagents for silylation, acylation, alkylation, and esterification suitable for GC, HPLC, and TLC chromatography and accessories. This technique enables the analysis of compounds that are otherwise not volatile or stable enough for analysis by GC, GC-MS, HPLC, or LC-MS. Derivatization Reagentsĭerivatization is used in chemical analysis to convert an analyte into a product that improves separation and enhances method sensitivity. Our reagents are subjected to rigorous quality control testing, including UV-absorption testing, filter testing, redox testing, and HPLC gradient grade testing to guarantee their quality and performance in your application. Strong acids such as straight-chain alkyl sulfonic acids for base or cation analysis.Quaternary ammonium salts with alkyl substituents of different chain lengths for the analysis of acids or anions.The systems allowed for the identification of 46 TG molecular species in human plasma with confident C C location assignment in fatty acyls at a limit of identification of 50 nM.Our selection of ion-pair reagents includes tailor-made compounds for the determination of cationic and anionic analytes. This online RPLC-PB-MS/MS system was able to distinguish fatty acyl level and C C level isomeric species. The Paternò–Büchi (PB) reaction was employed online to confidently characterize the location of C Cs within lipid species via photo-initiated modification of the alkene group with acetone, which was later subjected to electrospray ionization (ESI) and tandem mass spectrometry (MS/MS) to form signature fragmentation peaks. RPLC alone does not provide structurally informative information for the location of carbon–carbon double-bonds (C Cs) without using synthesized standards that correspond to each species analyzed. In this work, reversed-phase liquid chromatography (RPLC) was used for separation of TG species due to the capability of separating lipids based on fatty acyl chain lengths and degrees of unsaturation. Due to structural complexity, analyzing TGs using shotgun lipidomic approaches is challenging because of the presence of multiple fatty acyl compositional isomers. Triacylglycerol (TG) is a class of lipids that is responsible for energy storage and cell metabolism in biological systems it is found in relatively high abundances in biological fluids such as human plasma.
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