Chiral Derivatizing Agents Aid Enantioseparation of Amino Acids
Researchers at the Indian Institute of Technology Roorkee (Roorkee, India) prepared chiral dichloro- and monochloro s-triazines by nucleophilic displacement of chlorine atoms in s-triazine chloride and its 6-methoxy derivative with various amino acid amides.
Researchers at the Indian Institute of Technology Roorkee (Roorkee, India) prepared chiral dichloro- and monochloro s-triazines by nucleophilic displacement of chlorine atoms in s-triazine chloride and its 6-methoxy derivative with various amino acid amides. The diastereomers were then separated using reversed-phase liquid chromatography with a C18 column and an acetonitrile-aqueous trifluoroacetic acid mobile phase. The researchers found that the dichloro s-triazine reagents enabled better diastereomer separation than the monochloro s-triazines.
Study Explores Thin-Film Extraction of Biogenic Amines via HPLC-MS/MS
March 27th 2025Scientists from Tabriz University and the University of Tabriz explored cellulose acetate-UiO-66-COOH as an affordable coating sorbent for thin film extraction of biogenic amines from cheese and alcohol-free beverages using HPLC-MS/MS.
Multi-Step Preparative LC–MS Workflow for Peptide Purification
March 21st 2025This article introduces a multi-step preparative purification workflow for synthetic peptides using liquid chromatography–mass spectrometry (LC–MS). The process involves optimizing separation conditions, scaling-up, fractionating, and confirming purity and recovery, using a single LC–MS system. High purity and recovery rates for synthetic peptides such as parathormone (PTH) are achieved. The method allows efficient purification and accurate confirmation of peptide synthesis and is suitable for handling complex preparative purification tasks.
