767 Results for: "Preparative HPLC"

Supplier: Anaspec

Removal of any preexisting structures in lyophilized stocks of Aβ-peptide is the critical initial step for controlled aggregation studies. HFIP has been shown to break down β-sheet structure, disrupt hydrophobic forces in aggregated amyloid preparations, and promotes α-helical secondary structure. HFIP treatment of lyophilized Aβ-peptide resulted in a dense, homogeneous preparation of unaggregated peptide and samples can be stored as peptide films. HFIP treated Aβ-peptide samples can be stored as peptide films and can be used in controlled aggregation studies.
Sequence: DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVVIA
Molecular Weight: 4514.1
% Peak Area by HPLC: ≥95
Peptide Content: ≥ 60%
Storage condition: -20°C

Supplier: Thermo Scientific

Separate a wide range of enantiomers with Hypersil™ Chiral HPLC columns, designed for separations of neutral, acidic and basic racemates in normal phase. These chiral columns can help ensure your purification needs are met by resolving racemic mixtures and potential contaminants so you can be confident in the purity of target compound. To maximize screening efficiency, these columns can be ordered in kits which contain a column in each of our chiral phases. All columns are available in analytical and preparative scale formats.

Supplier: MP Biomedicals

1,1,1,3,3,3-Hexafluoro-2-propanol is polar and exhibits strong hydrogen bonding properties enabling it to dissolve substances that serve as hydrogen-bond acceptors. 1,1,1,3,3,3-Hexafluoro-2-propanol is a polar solvent of high ionizing power and facilitates Friedel–Crafts-type reactions, using covalent reagents in the absence of a Lewis acid catalys. 1,1,1,3,3,3-Hexafluoro-2-propanol clusters catalyzes the epoxidation of cyclooctene and 1-octene with hydrogen peroxide.
It is a speciality solvent effective for solubilizing a wide range of polymers, including those that are not soluble in the most common organic solvents: such as polyamides, polyacrylonitriles, polyacetals, polyesters (e.g. polyglycolide), and polyketones. It has also found use in biochemistry to solubilize peptides and to monomerize β-sheet protein aggregates. It can be used as an acid in volatile buffers for ion pair HPLC - mass spectrometry of nucleic acids. 1,1,1,3,3,3-Hexafluoro-2-propanol was used for preparing hexafluoroalcohol-functionalized methacrylate polymers for lithographic/nanopatterning materials.

Supplier: MP Biomedicals

Sodium phosphate is a reagent with very high buffering capacity that is widely used in molecular biology, biochemistry, and chromatography. Sodium phosphate occurs in several forms: monobasic (NaH2PO4), dibasic (Na2HPO4), and tribasic (Na3PO4). Most neutral sodium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.
Sodium phosphate monobasic, Monohydrate is used as sequestrant, emulsifier and buffer in foods; as mordant in dyeing; for weighting silk in tanning; in manufacture of enamels, ceramics, detergents, boiler compounds; as fireproofing agent; in soldering and brazing instead of borax; as reagent and buffer in analytical chemistry; cathartic; laxative. A table for preparation of 0.1 M sodium phosphate buffer at 25 °C using various proportions of sodium phosphate monobasic and sodium phosphate dibasic has been published. A study of the effect of freeze-thaw storage cycles on proteins in sodium phosphate and potassium phosphate buffer solutions has been reported. The effect of 5 mM sodium phosphate on the efficacy of electrospray ionization (ESI) ion mobility spectrometry (IMS) analysis has been evaluated. A protocol for the purification of pyrogen-free mouse IgG1 monoclonal antibodies which uses 10 mM sodium phosphate (pH 7.4) has been published. An ion-pairing HPLC method for the analysis of 5-aminosalicylic acid has been reported. A TLC method for separation of nucleotide sugars in the study of glycosyltransferase activity has been published.
Room Temperature, Desiccate

Supplier: Avantor

Avantor® Partisil® is one of the first commercially available irregular silicas with a large surface area giving it a high loading capacity for preparative work.

Supplier: AVANTOR PERFORMANCE MATERIAL LLC

These are used in low pressure preparative chromatography. The mesh specifications ensure there is no excess of fines in the product which can affect flow rates and separation performance.

Supplier: VWR International

Application specifc column for direct introduction of aqueous samples, thus minimizing sample preparation.

Supplier: VWR International

Application specifc column for direct introduction of aqueous samples, thus minimizing sample preparation.

Supplier: Avantor

Avantor® Partisil® was one of the first commercially available irregular silicas with a large surface area giving it a high loading capacity for preparative work.

Supplier: Avantor

These Avantor® ACE® Excel® Phenyl columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® Excel® AQ columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

These Avantor® ACE® CN columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

These ultra-inert Avantor® ACE® C8 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C18 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative. These columns are designed for a wide range of chromatographic applications, to provide great performance with acidic, basic and neutral molecules.

Supplier: Avantor

These ultra inert Avantor® ACE® Phenyl-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® Excel® AQ columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C18 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C18-HL columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: YMC America,Inc

YMC-Triart C8, 5 µm semi-preparative and preparative columns are packed with a novel, organic/inorganic hybrid silica particles derivatized with C8.

Supplier: Avantor

Avantor® ACE® Silica columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

These ultra-inert Avantor® ACE® Phenyl columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® AQ columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

These ultra inert Avantor® ACE® Phenyl columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

These ultra-inert Avantor® ACE® Excel® C4 columns provide great reproducibility and column lifetime. These columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C4-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C18-300 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C4-300 columns provide great reproducibility and column lifetime. These columns are available in a wide range of particle sizes and dimensions from capillary to preparative. These columns are designed for a wide range of chromatographic applications, to provide great performance with acidic, basic and neutral molecules.

Supplier: Avantor

Avantor® ACE® C18 columns provide great reproducibility and column lifetime. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® C18-Amide is a uniquely designed stationary phase offering improved retention of polar compounds, enhanced phenolic resolution and alternative selectivity to C18 bonded columns. These stainless steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.

Supplier: Avantor

Avantor® ACE® Excel® C18-HL columns provide great reproducibility and column lifetime. These stainless-steel columns are available in a wide range of particle sizes and dimensions from capillary to preparative.