This protocol describes a procedure for determining glutathione (GSH) and glutathione disulfide (GSSG) concentrations in blood and other tissues. Artifactual oxidation to GSSG of 5–15% of the GSH ...

The authors discuss the approach taken to develop a new calibration approach, its associated protocols, and how it can be used to calculate data. The use of open-access high-performance liquid ...

An interview with Dr. Michael Dong, about his upcoming talk at Pittcon. Why are stability-indicating methods important in pharmaceutical analysis? The stability-indicating assay is perhaps the single ...

Thermo Fisher Scientific has announced a direct-detection reversed-phase high-performance liquid chromatography (HPLC) chromatographic assay method that separates the congeners in gentamicin sulfate ...

Investigation of peak purity failure during HPLC method validation led to discovery of a co-eluting impurity under the main peak. Spectral analysis, including three-dimensional modelling, was used to ...

When conducting reproducible and interference-free analysis by liquid chromatography, the purity of the solvents used, particularly the purity of water, is crucial for the sensitivity of this method, ...

This talk will explore HILIC chromatography methods for the analysis of released N-glycans labeled with InstantPC or 2-AB dyes. Best practices for robust methods will be introduced. Method development ...

Appropriate storage conditions can only be assessed once a stability study has been conducted and it is never too early to start gathering stability data. Stability studies are a pharmacopoeial ...