767 Results for: "Preparative HPLC"

Supplier: Thermo Fisher Scientific

Pierce™ 0.1% Trifluoroacetic Acid (v/v) in Water, LC-MS Grade is a preparation with high purity and low UV-absorptivity that is ideal for HPLC and mass spectrometry applications.

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

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: Corning

Spin-X® centrifuge tube filters use centrifugation to remove bacteria, particles, or cells from liquids, HPLC sample preparation and DNA removal from agarose or acrylamide gels.

Supplier: Invitrogen

Thermo Scientific Pierce Formic Acid is high-purity solvent supplied in bottles as a convenient, contamination-free alternative for preparing elution solvents for HPLC separations of protein and peptides.

Supplier: Thermo Fisher Scientific

Thermo Scientific Pierce Acetonitrile (ACN) is an LC/MS-grade preparation with high purity and low UV-absorptivity that makes it suitable for HPLC and mass spectrometry applications.

Supplier: Avantor

Avantor® ACE® CN-ES combines CN polar selectivity with enhanced hydrophobicity, enabling the benefits of both interactions to be fully exploited. Extra phase stability and increased column lifetime is provided by an extended alkyl chain spacer between the silica surface and cyano group. Avantor® ACE® CN-ES is suitable for both reversed phase and normal phase separations.

Supplier: Avantor

Avantor® ACE® SuperC18™ columns provide high stability across an extended pH range. These stainless steel columns are ideal for use with LC/MS compatible buffers and can be used with both MeOH and MeCN mobile phases.

Supplier: Honeywell Research Chemicals

ACS GENERAL USE SOLVENTS

Supplier: Aladdin Scientific

Application: Cytosine has been used:for the preparation of nucleobase solutionsas a standard for high-performance liquid chromatography (HPLC)for the estimation of global methylation ratefor nucleoside 5′-triphosphate (NTP) synthesispurification.

Supplier: Thermo Fisher Scientific

Thermo Scientific Pierce Water, LC-MS Grade is an ultrapure, LC-MS grade preparation with low UV-absorptivity that makes it suitable and reliable for use in HPLC and mass spectrometry applications.

Supplier: Anaspec

Although FITC reagents have been more often used to prepare fluoresceinated bioconjugates, the low stability of FITC bioconjugates makes some researchers use amine-reactive succinimidyl esters of carboxyfluorescein (commonly called FAM) in bioconjugations. FAM reagents give carboxamides that are more resistant to hydrolysis. We have shown that FAM reagents require less stringent reaction conditions and give better conjugation yields, and the resulted conjugates have superior stability. We noted that FITC labeled peptides tend to deteriorate more quickly than the corresponding FAM conjugates.

Supplier: MicroSolv Technology Corp

These HPLC columns have a silica hydride surface similar to other TYPE-C™ phases with all the TYPE-C silica benefits. The value of Phenyl Hydride™ is that they have unique selectivity for compounds with aromatic rings and because of the direct silicon carbon bonds, these columns are extremely stable with long column lifetime. These columns can be used in Reversed Phase (RP), Aqueous Normal Phase (ANP) or Normal Phase (NP) and changed back and forth without damage to the columns.

Supplier: MicroSolv Technology Corp

These useful HPLC columns have a silica hydride surface similar to other TYPE-C™ phases but the uniqueness of Diamond Hydride™ is that they have a very small amount of carbon on the surface that adjusts the hydrophobicity to a small but important level. This is an excellent choice for small, polar compounds by LCMS or HPLC.

Supplier: Aladdin Scientific

4-Chlorophenyl methyl sulfone (CPMSO2) is a sulfone analog of 4-chlorophenyl methyl sulfide. It is used as an intermediate for preparing sulfur-containing xenobiotics.4-Chlorophenyl methyl sulfone may be used in the preparation of 4-(methylsulfonyl)aniline by reacting with ammonia. It may also be used as a standard during the quantification of 4-chlorophenyl methyl sulphide by HPLC in rat liver microsomes.

Supplier: Cytiva

SPARTAN syringe filters with regenerated cellulose (RC) membrane provide reproducible filtration of organic and aqueous solutions for high performance and ultra-high performance liquid chromatography (HPLC and UHPLC) sample preparation.

Supplier: Honeywell Research Chemicals

ACS GENERAL USE SOLVENTS

Supplier: Aladdin Scientific

(1S,2R)-(+)-2-Amino-1,2-diphenylethanol can be used:· To prepare vanadium(V) Schiff base complexes, which are used as catalysts in the oxidation of sulfides and olefins. · To prepare chiral selectors, which are immobilized on aminated silica gel, applicable as chiral stationary phase in HPLC. · To immobilize on the frame of α-zirconium phosphate to yield layered zirconium phosphonates, which are used in the heterogeneous catalysis. · As a chiral auxiliary in the preparation of homopropargylic alcohols from aliphatic and aromatic aldehydes.

Supplier: Thermo Scientific

Low nonspecific binding membrane with excellent chemical resistance.

Supplier: Thermo Scientific

Adding a syringe filtration step prior to injection not only helps to ensure more consistent and reliable results; it also helps protect delicate instruments and prolongs column life.

Supplier: MicroSolv Technology Corp

These Cogent Bidentate C8™ phases are moderately hydrophobic and for that reason are a good starting column when scouting for compounds of unknown polarity. They will perform in Normal Phase (NP), Reversed Phase (RP) and Aqueous Normal Phase (ANP).

Supplier: MilliporeSigma

Reagent used to prepare fluorogenic 7-amido-4-methylcoumarin (AMC) based substrates for the detection of proteolytic enzymes. Also useful as a reference standard in enzyme assays. Excitation maximum: 365–380nm; emission maximum: 430–460nm.

Supplier: Rockland Immunochemical

Produced through a multi-stage process that includes delipidation, salt fractionation, ion-exchange chromatography, gel filtration, and affinity chromatography. No contaminating proteins are observed when assayed at a protein concentration of 20mg/mL against anti-whole serum or anti-fragment specific antisera. All immunoglobulin fragments are prepared from highly purified, whole molecules subject to enzymatic digestion.

Supplier: Honeywell Research Chemicals

ACS GENERAL USE SOLVENTS

Supplier: Aladdin Scientific

Electrochemical reduction of 5-amino-6-nitroquinoline has been studied at carbon paste electrode by differential pulse voltammetry, direct current voltammetry, adsorptive stripping voltammetry and HPLC with electrochemical detection.5-Amino-6-nitroquinoline was used in preparation of imidazoquinoline derivatives.

Supplier: Honeywell Research Chemicals

ACS general use certified, reagent grade

Supplier: MP Biomedicals

Ammonium acetate is a chemical compound which is derived from the reaction of ammonia and acetic acid. Ammonium acetate is volatile at low pressures. Because of which it has been used to replace cell buffers with non-volatile salts, in preparing samples for mass spectrometry. It is used as a buffer for mobile phases for HPLC with ELSD detection.

Supplier: MP Biomedicals

Ammonium acetate is a chemical compound which is derived from the reaction of ammonia and acetic acid. Ammonium acetate is volatile at low pressures. Because of which it has been used to replace cell buffers with non-volatile salts, in preparing samples for mass spectrometry. It is used as a buffer for mobile phases for HPLC with ELSD detection.

Supplier: Cytiva

Whatman Puradisc micron syringe filters from Cytiva's offer a versatile solution for analytical sample preparation needs. They are a variety of options available to suit all labs needs, and are well-suited for routine syringe filtration of samples up to 100 ml for a range of applications, including high performance liquid chromatography (HPLC) and capillary electrophoresis (CE).

Supplier: Anaspec

This peptide prepared by neutralizing the TFA salt form of Aß (1-42) with a dilute sodium hydroxide solution has superior solubility and fibrillogenesis properties, and the fibrils are equally neurotoxic.
Sequence: DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVVIA
MW: 4514.1+23 Da
Molecular Weight: 4514.1 + 23
% Peak Area by HPLC: ≥95
Peptide Content: ≥ 60%
Storage condition: -20°C