lichropur® high purity acids for hplc and lc-ms analysis

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Showing 1-30 of 64 results for "lichropur® high purity acids for hplc and lc-ms analysis" within Site Content

LC/MS Analysis of Opioid Glucuronide Metabolites in Urine on Ascentis® Express F5 after Solid Phase Extraction (SPE) using Supel™-Select HLB

HPLC Tips & Tricks: Mobile Phase Preparation Part 2 - Buffers

Learn the tips and tricks of selecting and preparing a suitable mobile phase buffer for your HPLC separations and method developments for samples that contain ionizable compounds.

LC/MS/MS Analysis of Vitamins B1 and B6 on Ascentis® Express OH5

Separation of Pyridoxine Hydrochloride (B6), analytical standard; Thiamine Hydrochloride (B1), analytical standard

HPLC Analysis of Vitamins B1 B6 B12

HPLC Analysis of Vitamins B1, B6 and B12 using Ascentis® Express RP-Amide

Difluoroacetic Acid as an Effective Mobile Phase Modifier for the LC-UV/MS Analysis of Proteins

The article describes the use of difluoroacetic acid (DFA) as an effective alternative to acid modifiers, formic acid (FA) and trifluoroacetic acid (TFA) in the LC-UV/MS analysis of proteins.

HPLC Analysis of PEG g006200

HPLC Analysis of PEG on Two Zenix® SEC-300 Columns in Tandem

BIOshell™ IgG 1000 Å C4 UHPLC Column for Improved Biomacromolecule Separations

Optimising the LC-MS Analysis of Biomolecules

We present an article concerning optimising the LC-MS analysis of biomolecules.

Separation of Organic Acids with 100% aqueous mobile phase using an Ascentis^® Express AQ-C18 HPLC Column

A new RP-HPLC method is proposed for the determination of organic acids in 100% aqueous mobile phase using an Ascentis® Express AQ-C18 column

Determination of Ethyl Glucuronide and Ethyl Sulfate in Urine using LC-MS/MS

This study is aimed at developing and validating an LC-ESI-ion trap-MS/MS method for identification and quantification of ethyl glucuronide (EtG) and ethyl sulfate (EtS) as ethanol biomarkers for urine analysis.

Determination of Tramadol in Urine using LC-MS/MS

This article presents an LC-MS/MS method for the determination of tramadol in urine samples using reversed-phase LC-MS/MS aided by isotope internal standards.

Impact of Mobile Phase Additives on LC-MS Sensitivity, Demonstrated using Spice Cannabinoids

This study demonstrates the impact of various mobile phase modifiers on the separation; formate modifiers outperform acetate in terms of MS signals (or sensitivity) and chromatographic resolution.

LC/MS Analysis of L-Methionine Sulfoximine and Sulfone on Ascentis® Express OH5

LC/MS Analysis of L-Methionine Sulfoximine, Sulfone and Sulfoxide on Ascentis® Express HILIC

Separation of L-Methionine sulfone; L-Methionine sulfoximine; L-Methionine sulfoxide

Metabolites – A Serious Challenge for LC/MS Separations and Usual Detection Techniques

We offer the tools for the analysis of the metabolites; including certified reference standards, enzymes, substrates, and chromatographic products.

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

Optimized sample prep and chiral chromatography methods for the LC/MS analysis of these drug enantiomers in urine

HPLC Columns for Antibody and Large Protein Analysis

BIOshell™ IgG 1000 Å C4 columns are highly suited for the reversed phase separation of high molecular weight compounds such as monoclonal antibodies with molecular weight of 150 kDa.

Biological Testing for Amphetamine and Methamphetamine Abuse

In this study, optimized methods are presented for sample preparation and chiral chromatography for the LC/MS analysis of amphetamine and methamphetamine enantiomers in urine.

Chiral LC-MS/MS of D- and L-2-Hydroxyglutaric Acid Biomarkers

We describe here a rapid and sensitive method to separate and measure D-2-OHG and L-2-OHG enantiomers using high-resolution mass spectrometry (HRMS) detection.

Derivatization Agents for LC/MS – An Improved Detection of Estradiol with ESI-MS

Improved LC/MS Detection of Estradiol using 4-(Dimethylamino) benzoyl chloride (DMABC) derivatization agent relative to dansyl chloride.

Chiral Method Development Strategies for HPLC

Benefits of Ascentis Express Phenyl-Hexyl over Biphenyl for the Separation of Pain Management Opiates

Although both biphenyl and phenyl-hexyl phases can resolve these compounds, the former exhibits excellent peak shape and substantially less silanol-derived ion exchange activity.

Ethyl Acetate

We offer a variety of ethyl acetate products suitable for applications including GC, HPLC, UHPLC, and LC-MS. We also supply multiple options for anhydrous ethyl acetate and ACS grade ethyl acetate.

Ascentis® Express F5 (Pentafluorophenyl) U/HPLC Columns

Enhanced selectivity for stereoisomers and closely related compounds with alternate selectivity from C18 phases for basic, acidic, or neutral compounds

Discovery BIO Wide Pore C5

Discovery BIO Wide Pore C5 products offered.

DiscoveryBIO Wide Pore C18

DiscoveryBIO Wide Pore C18 products offered by Sigma-Aldrich.

2-Hydroxyglutarates Analysis by LCMS

Reversed phase application for the analysis of S-2-hydroxyglutaric acids and R-2-hydroxyglutaric acids by chiral LCMS, using a CHIROBIOTIC® R Column.

Reference Standards for Analyzing Polyphenol Catechins

Ascentis® Express RP-Amide Columns for HPLC and UHPLC

Improve your separation of basic compounds with our Ascentis® Express RP-Amide HPLC columns from the Supelco® portfolio.

Fast LC-MS-MS Analysis of 25-Hydroxyvitamin D2 and 25-Hydroxyvitamin D3

We presents a robust method for analyzing 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 in serum using a multiplexed LC-MS-MS system.

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