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Showing 1-30 of 179 results
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™ QuE and Ascentis® 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.
Identification, Assay and Organic Impurity Profiling Methods for Aripiprazole following the United States Pharmacopeia Monograph
Aripiprazole is an atypical antipsychotic and a partial dopamine agonist. It is primarily used in the treatment of schizophrenia, bipolar disorder, major depressive disorder, tic disorders, and irritability associated with autism. Aripiprazole was first approved by the U.S. Food and
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.
Fast and Accurate LC-MS Analysis of Vitamin D Metabolites Using Ascentis® Express F5 HPLC Columns
Fast and Accurate LC-MS Analysis of Vitamin D Metabolites, Using Ascentis® Express F5 HPLC Columns from Supelco®
HPLC Analysis of Flavonoids on Ascentis® RP-Amide
Protocol for HPLC Analysis of Flavonoids on Ascentis® RP-Amide
Chloroquine Phosphate HPLC Assay and Impurity Profiling Methods Following the USP Monograph
Under applied conditions, system suitability criteria are met, and the Chloroquine Phosphate HPLC Assay and Impurity Profiling Methods demonstrate good resolution/selectivity, reproducibility, and sensitivity.
Enantiomeric Purities of Pharmaceuticals Using Carbohydrate-based Isothiocyanates
Enantiomeric analysis of neurotransmitters and pharmaceuticals carrying functional amino groups, ß-adrenergic blockers; penicillamine, mexiletine; fine chemicals such as 1-phenyl-2-aminoethanol.
HPLC Analysis of Fatty Acid Methyl Esters (FAMES) on SUPELCOSIL LC-18
Separation of Methyl decanoate; Methyl dodecanoate; Methyl myristate; Methyl palmitate; Methyl caprylate; Methyl oleate; Methyl linoleate; Methyl linolenate; Methyl stearate
Analysis of Human Plasma Lipids Using sub-2 μM C18 UHPLC Column with MS Detection
A comprehensive platform for lipidomics studies by LC/MS, applied without any modification in conditions and suitable to both ESI and APCI interfaces.
Determination of Vitamin A and E Using HPLC with UV Detection Following the Chinese National Standard (GB) Method
Following GB method for Vitamin A and Vitamin E as it is written with a 250 x 4.6 mm Ascentis® Express C30 column gives baseline resolution between the critical pair (gamma-, and beta-tocopherol; peaks 3 and 4).
Mass Spectral Column Bleed in Nitrogen-Containing Polar-Embedded HPLC Stationary Phases
Mass Spectral Column Bleed in Nitrogen-Containing Polar-Embedded HPLC Stationary Phases
US EPA Method 632: HPLC Analysis of Pesticides on Ascentis® C18
-methylcarbamate 10 μg/mL; Diuron; Propham; Siduron; Methiocarb, analytical standard; Linuron 10 μg/mL; Swep 10 μg/mL; Chlorpropham 10 μg/mL; Barban; Neburon
HPLC Analysis of Aswagandha Extract on Discovery® C18
Separation of Withanoside IV; Withanoside V; Withaferin A; 12-Deoxywithastramonolide; Withanolide A; Withanolide B
Lopinavir European Pharmacopeia HPLC Assay Method
This paper illustrates the setting up of a Lopinavir assay following European pharmacopoeia guidelines (10.2), and using a shorter column packed with smaller particles. The described assay saves valuable time and improves separation efficiency, which typically translates to better method
UHPLC/MS Analysis of Cannabinoids Extracted from Raw Cannabis Sativa (Marijuana) on Ascentis® Express RP-Amide
THC solution, 1.0 mg/mL in methanol, ampule of 1 mL, certified reference material; Cannabidiolic acid solution, 1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material; Cannabichromene solution, 1.0 mg/mL in methanol, ampule of 1 mL, certified reference material;
HPLC Analysis of Water-Soluble Vitamins Using Titan C18 Column
The B vitamins are very hydrophilic, consequently a gradient with a low concentration of methanol and acidic mobile phase was used for elution under reversed-phase conditions.
HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide
HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide
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
HPLC Analysis of Monosaccharides Ribose, Xylitol, and Mannose on Chromolith® NH2
Separation of Ribose, United States Pharmacopeia (USP) Reference Standard; Xylitol, analytical standard; Mannose, United States Pharmacopeia (USP) Reference Standard
HPLC Analysis of Aspirin and Salicylic Acid on Ascentis® Express RP-Amide
Separation of Acetylsalicylic acid, analytical standard; Salicylic acid, BioXtra, ≥99.0%
Determination of Rutin in Anti-Aging Skin Cream Formulations Using Chromolith® HighResolution RP-18 Endcapped Column and UV Detection
This application illustrate how Rutin can be determined in skin cream samples using a monolithic Chromolith® HighResolution RP-18 endcapped column with UV detection.
LC MS Analysis of Nucleotides Effect of pH
ZIC-cHILIC is a densely bonded zwitterionic stationary phase with phosphorylcholine functional groups covalently attached to silica.
A Fluorescence Derivatization Reagent for the Liquid Chromatographic Determination of Airborne Isocyanates
Currently, mono- and diisocyanates are widely applied for the industrial production of pharmaceuticals, pesticides or polyurethanes (PURs). Owing to their high reactivity, isocyanates are toxic. Isocyanates in general have strong sensitising properties and are supposed to be most common inducers
HPLC Analysis of Fexofenadine and Related Compound B on CYCLOBOND® I 2000 Phases
The use of alternative chiral stationary phases to CYCLOBOND I 2000 SP suggested by USP, was studied for the analysis of fexofenadine and related compound B.
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