Small molecule HPLC

Applied Filters:

facet applications:Small molecule HPLC

facet content type:Technical Article

Showing 1-30 of 145 results

LC/MS/MS Method for Determination of Glyphosate, AMPA, and Glufosinate in Cereals

Glyphosate and related compounds are measured in oatmeal and infant cereal using ion-exchange polymer-based particles for HPLC and SPE. Low level detection was obtained.

Bioanalysis with SPME

Biocompatible SPME devices employ C18 bonded porous silica sorbent particles, in a binder which resists fouling by biological matrix components

Rapid Determination of Protein Binding Affinity Using Solid Phase Microextraction

Accurate protein binding affinities were measured using bioSPME more rapidly than membrane dialysis (RED) techniques. Binding affinities correlated to the reference values.

Ascentis® Express Phenyl Hexyl Columns for U/HPLC

Improve your reversed phase selectivity for polar aromatics and heterocyclic compounds with the Ascentis® Express Phenyl-Hexyl U/HPLC column.

BIOshell™ Glycan U/HPLC Columns

The BIOshell™ Glycan column is ideal for the separation and quantitation of isolated glycans using the HILIC method for accurate glycoprotein analysis.

BIOshell™ A400 Protein C4 U/HPLC Columns

BIOshell™ A400 Protein C4 columns contain 3.4 μm particles with 400 Å pores, which are derivatized with dimethylbutyl silane and exhaustively endcapped for optimum protein recovery.

Improving HILIC Mode Chromatography by Choosing the Proper Injection and Wash Solvent

How to Select the Right Water Purification System for Your Lab

Technical article on Selecting the Right Water Purification System

Developing HPLC Methods

We recommend every HPLC method developer have these four columns in their arsenal; Ascentis C18, Ascentis RP-Amide, Ascentis Phenyl and Discovery HS F5.

Method Optimization for LC-MS Analysis of Vitamin D Metabolite Critical Pairs in Serum

Novel sample prep technique coupled with the unique selectivity of the Ascentis Express F5 column enables a fast and simplified bioanalytical method for associated vitamin D metabolites.

HybridSPE-Phospholipid Technology

This Sigma-Aldrich article discusses how the HybridSPE-Phospholipid Technology works and how the phospholipids are removed.

Method Optimization for LC-MS Analysis of Vitamin D Metabolite Critical Pairs in Serum

Using HybridSPE-Phospholipid, Ascentis Express, and Other LC-MS Workflow Components

Quick, Sensitive LC/MS/MS Analysis of Aflatoxins in Cannabis

Analyte recovery values from spiked cannabis extracts ranged from 102 to 127% with RSD below 12% for 3 replicates. Excellent recovery values were even observed for Aflatoxins B2 and G2 which were spiked at a low level of 6.1 ppb.

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.

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.

Ascentis® Express Biphenyl UHPLC and HPLC Columns

The bonded, densely endcapped, dimethyl-biphenyl stationary phase of Ascentis® Express 90 Å Biphenyl, based on fused-core particles, provides a stable, reversed phase packing with enhanced π-π and mild steric interactions due to the two sequential phenyl groups bonded to the

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.

SupraSolv® GC Solvent Specifications

Our GC solvents have been specially developed and tested for ECD, FID and MS detection or for headspace gas chromatography to ensure accurate, reliable and reproducible analytical results.

Quantitative Analysis of Nitrosamine Impurities by LC-MS Methods from the United States Pharmacopeia General Chapter <1469>

This application note describes the LC-MS-based quantitative analysis of known nitrosamine impurities following procedures 1 and 3 as given in USP general chapter .

Ascentis ® Express HILIC U/HPLC Columns

For separation of polar compounds including polar neutrals, polar acids, and polar and non-polar basic amines use our Ascentis® Express HILIC column.

Extractables Studies of Single-Use Equipment Immediate Identification and Quantification of Unknown Extractables by GC/MS with a Certified Reference Material Mix for Extractables and Leachables

Identification and quantification of the most common extractables originating from single-use equipment by GC/MS and an Extractables and Leachables Screening Standard.

Released N-Glycan Analysis of a Therapeutic Antibody Using BIOshell™ Glycan Column

This application note describes the released N-Glycan analysis of a monoclonal antibody, cetuximab, labeled with procainamide, using a BIOshell™ Glycan HPLC column.

USP HPLC Analysis of L-Methionine on Ascentis® Express OH5

Separation of L-Methionine, Pharmaceutical Secondary Standard; Certified Reference Material

Piroxicam Capsules-Assay and Organic Impurities Following United States Pharmacopoeia Pending Forum Method

A reversed-phase high-performance liquid chromatography (RP- HPLC) based quantitative assay and organic impurity analysis of Piroxicam in its capsule dosage form.

Ultrapure Water for LC MS Biomedical Analyses

This study assesses the suitability of ultrapure water from a Milli-Q® water system for sensitive LC-MS analyses of hormones.

HPLC Tips & Tricks – Mobile Phase Preparation

Tips and tricks to prepare the correct and consistent mobile phase for optimized separations during your High-performance Liquid Chromatographic (HPLC) based method developments and optimizations.

HPLC Tips & Tricks: Getting Greener in HPLC

Discover sustainable liquid chromatography techniques, including eco-friendly solvents and optimized methods, to reduce environmental impact in various analytical fields.

Sample Cleanliness Using BioSPME

Learn about Supel™ BioSPME C18 96-pin tool to prepare a clean sample with minimal matrix effects for an LC-MS/MS analysis from human plasma and its comparison with acetonitrile-based precipitation.

LC-MS Analysis of PFAS Compounds in EPA Method 533 using Supelclean™ ENVI-WAX™ SPE

Learn how method EPA 533 is used for sample collection and preparation, featuring Supelclean™ ENVI-WAX™ SPE cartridges for LC-MS analysis on an Ascentis® Express PFAS HPLC Column.

The Extraction of Amphetamine and Related Drugs using Molecularly Imprinted Polymer SPE

Page 1 of 5