Application Notes: LC

Erythromycin analysis in creams, lotions, etc., based on HPAEC-PAD using the ALEXYS Antibiotics Analyzer according to the official 2018 USP 41—NF36 monograph.

SMX and TMP are the active ingredients of Co-trimoxazole or Bactrim. They can be analyzed easily and inexpensively using HPLC with pulsed amperometric detection.

The ALEXYS HPAEC-PAD Analyzer is used for the analysis of both antibiotics, in accordance with the USP 38 monographs.

A HPAEC-PAD method is presented for the sensitive analysis of mono-, di-, and trisaccharides in plant tissue extracts and root exudates..

This application note demonstrates a fast, selective, and sensitive method for the analysis of lactose and isomers based on HPAEC with Pulsed Amperometric Detection.

A HPAEC-PAD method with a four-step potential waveform is applied for the analysis of Erythritol, Xylitol, Sorbitol, Mannitol, and Maltitol, resulting in excellent reproducibility.

The ALEXYS Antibiotics Analyzer is used for routine assay and impurity analysis of Azithromycin in various formulations according USP 41 monographs.

Plasticizers added to water bottles to add stability to the bottles can be unknowingly extracted in drinks leading to possible endocrine interactions. 

This article introduces a comprehensive fractionation for both UV absorbing and non-UV absorbing compounds using a newly designed PDA-ELSD triggered preparative LC.  

Plasticizers added to water bottles to add stability to the bottles can be unknowingly extracted in drinks leading to possible endocrine interactions. 

The Epic C18 column provides efficient and repeatable separations for finasteride, meeting all suitability requirements in the USP monograph.

The superior base deactivation and high-density bonding technology of the Epic C18 phase yields excellent peak shape in betamethasone analyses.

This application brief describes the use of an Epic C18 column for the analysis of acetaminophen, aspirin, and caffeine yielding rapid and reproducible results.

This application brief describes the use of an EpicTM C18 to analyze three ginsenosides using a method based on the Chinese Pharmacopeia.

Learn how to use flash chromatography and prep HPLC for protein purification, parameters that improve resolution, and how to select the stationary phase and solvent.

This note demonstrates the determination of PAH4 inedible oils with automated sample enrichment and matrix elimination (online solid-phase extraction - online SPE).

This application demonstrates the efficiency, throughput, and reliability of a dual-injection system for finished pharmaceutical products and in-process APIs.

Cannabinoids have similar molecular structures, making purification a challenging step. Learn how centrifugal partition chromatography can simplify this process.

Synthetically derived food and beverage dye analysis to meet regulatory requirements aimed at reducing the risk of allergies, cancers, and attention deficits.

Sulfide compounds found in garlic oils are used in therapeutics and prophylaxis of certain cancers and are prevalent in cell health.

Identification and quantification of the raffinose family of oligosaccharides allows a more thorough understanding of an individual’s gut health.

AEX using a TSKgel® DNA-NPR column offers a rapid method for discriminating between covalently closed circular, open circular, and linear forms of plasmid DNA.