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Reversed-Phase HPLC Analysis of Insulin Variants and Analogs by UV and Mass Spectral Detection
Insulin is an approximately 6000 Da peptide hormone used to regulate the glucose concentration in blood. There are several different forms of insulin that are both natural and recombinant; the recombinant forms have been engineered to improve pharmacokinetic properties. A...
Banned and Other Neonicotinoids from Plant Material
On Friday, April 27, 2018, the European Union decided to ban the use of three neonicotinoid insecticides from use on field crops, having deemed them dangerous to bees. This application demonstrates the analysis of these banned compounds and others from...
LC/MS Analysis of Nucleotides on SeQuant ZIC-cHILIC
HILIC separation is an alternative that permits sensitive MS detection and without the use of ion-pair reagents.
LC/MS Analysis of Melamine and Metformin on Ascentis® Express HILIC
Separation of Melamine; 1,1-Dimethylbiguanide hydrochloride
GC Analysis of Polynuclear Aromatic Hydrocarbons (PAHs) in Salmon on SPB®-608 after QuEChERS Cleanup using Supel™ QuE Z-Sep, Fast GC Analysis
GC Analysis of Polynuclear Aromatic Hydrocarbons (PAHs) in Salmon on SPB®-608 (20 m x 0.18 mm I.D., 0.18 µm) after QuEChERS Cleanup using Supel™ QuE Z-Sep, Fast GC Analysis
LC/MS/MS Analysis of Drugs in Plasma on Ascentis® Express C18 after Extraction using SPME LC Tips
LC/MS/MS Analysis of Drugs in Plasma on Ascentis® Express C18 after Extraction using SPME LC Tips
HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide
HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide
Quantifying Picogram Concentrations of Aflatoxin M1 in Liquid Milk Using SPE Cleanup and LC/MS Analysis
Fast method for the cleanup, analysis, and quantification of aflatoxin M1 in milk samples to EU regulatory standards (0.025 μg/kg).
Fast Extraction and Low Level Detection of Chloramphenicol in Shrimp
A highly selective and sensitive analytical method was developed for chloramphenicol using a QuEChERS type sample preparation approach and LC-MS/MS detection.
Determination of Lactose in Dairy Products Using TLC-MS
Straightforward HPTLC-MS analysis of lactose in dairy products (milk or yoghurt) using only protein crash, centrifugation and dilution as sample preparation.
Antibody Drug Conjugate Mimic Enables LC-MS Method Development Without Risk
Here we show how LC and MS methods may be optimized using a non-toxic surrogate of the ADC, an “ADC-mimic”, that behaves very similarly to the Cys-linked ADC Adcetris (Seattle Genetics).
acrylamide in food
Acrylamide analysis has been a very hot topic since the chemical was identified in food in 2002 by researchers at the Swedish National Food Administration.
LC/MS (TOF) Analysis of Illicit Bath Salts in Urine on Ascentis® Express HILIC After Solid Phase Extraction (SPE) Using Supel™-Select SCX
Separation of 3,4-Methylenedioxypyrovalerone HCl (MDPV) solution, 1.0 mg/mL in methanol (as free base), ampule of 1 mL, certified reference material; Buphedrone hydrochloride solution, 1.0 mg/mL in methanol (as free base), ampule of 1 mL, certified reference material; 3-Fluoromethcathinone hydrochloride solution...
LC MS Analysis of Triclosan Irgasan in Waste Water
Protocol for LC MS Analysis of Triclosan Irgasan in Waste Water
Online Solid Phase Extraction and LC-MS Analysis of Thyroid Hormones in Human Serum
Thyroid hormones play critical roles in the regulation of biological processes, such as growth, metabolism, protein synthesis, and brain development. For a clinical laboratory, fast and reliable measurements of total hormone levels are important for the diagnosis and monitoring of...
LC/MS/MS Analysis of Pesticide Residues in Pistachios on the Ascentis® Express RP-Amide Column after QuEChERS Extraction
LC/MS/MS Analysis of Pesticide Residues in Pistachios on the Ascentis® Express RP-Amide Column after QuEChERS Extraction
LC/MS/MS Analysis of Interacting Cardiac Drugs Digoxin, Quinidine, Amiodarone and Verapamil on Titan™ C18
LC/MS/MS Analysis of Interacting Cardiac Drugs Digoxin, Quinidine, Amiodarone and Verapamil on Titan™ C18
LC/MS Analysis of Aflatoxin M1 in Milk on Ascentis® Express HILIC after SPE using Supel™ Tox AflaZea, Quantifying Picogram Concentrations
Protocol for LC/MS Analysis of Aflatoxin M1 in Milk on Ascentis® Express HILIC after SPE using Supel™ Tox AflaZea, Quantifying Picogram Concentrations
LC/MS Analysis of Opioid Glucuronide Metabolites in Urine on Ascentis® Express F5 after Solid Phase Extraction (SPE) using Supel™-Select HLB
LC/MS Analysis of Opioid Glucuronide Metabolites in Urine on Ascentis® Express F5 after Solid Phase Extraction (SPE) using Supel™-Select HLB
Fast and Reliable Environmental Analysis of Aldehyde and Ketone Air Pollutants
Aldehydes and ketones are ubiquitous air pollutants. Along with esters and ethers, they are major components of indoor air pollution and are therefore important for industrial hygiene applications.
Extraction and Analysis of PAHs in Olive Oil using Molecularly Imprinted Polymer SPE and GC-MS
Extraction and Analysis of PAHs in Olive Oil using Molecularly Imprinted Polymer SPE and GC-MS
LC/MS Analysis of Methamphetamine Enantiomers on Astec® CHIROBIOTIC® V2 in Urine after SPE using Supel™-Select SCX
LC/MS Analysis of Methamphetamine Enantiomers on Astec® CHIROBIOTIC® V2 in Urine after SPE using Supel™-Select SCX
Mass Spectrometry Metabolite Library Protocol
MSMLS™ (Mass Spectrometry Metabolite Library of Standards) is a collection of high quality small biochemical molecules that span a broad range of primary metabolism. These are high purity (>95%) compounds supplied in an economical, ready-to-use format.
Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling
Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling.
Extraction and Analysis of Neonicotinoid Pesticides from Flower Blossoms Using Supel™ QuE and Ascentis® Express
Extraction and Analysis of Neonicotinoid Pesticides from Flower Blossoms Using Supel<sup>™</sup> QuE and Ascentis<sup>®</sup> Express
Chiral LC-MS Analysis of Methamphetamine in Urine on Astec® CHIROBIOTIC® V2
Efficient LC-MS separation of methamphetamine enantiomers in urine allows sensitive differentiation of illicit D-methamphetamine from over-the-counter L-methamphetamine.

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