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Fractionation of Aliphatic and Aromatic Hydrocarbons in Petroleum Extracts

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An Extraction of Loperamide and N-Desmethyl Loperamide from Blood Followed by LC–MS/MS Analysis

This application note effectively outlines a simple three-step method for the extraction of loperamide and its main metabolite, N-desmethyl loperamide, from blood.

The Application Notebook

Quantitative Analysis of Benzodiazepines in Whole Blood by QuEChERS and LC–MS/MS

The Application Notebook

The Grass Isn’t Always Greener: Removal of Purple Pigmentation from Cannabis Using QuEChERS Extraction and Chlorofiltr® dSPE Cleanup

The Application Notebook

Thyroid Hormones in Serum and Plasma Using SPE Extraction and UHPLC–MS-MS Analysis

This application note describes the development of an analytical method for the sensitive and accurate determination of free and total thyroid hormones in serum and plasma using a mixed-mode SPE extraction procedure and UHPLC–MS-MS analysis.