https://data.epo.org/publication-server/rest/v1.2/publication-dates/19901128/patents/EP0331229NWA3/document.html
Quaternary ammonium compounds for use in bleaching systems - Patent 0331229
Quaternary ammonium compounds for use in bleaching systems - Patent 0331229
quaternary ammonium compoundsusebleachingsystemspatent
https://www.chromatographyonline.com/view/separation-quaternary-ammonium-compounds-using-bonded-polymeric-zwitterionic-stationary-phase-1
Separation of Quaternary Ammonium Compounds Using a Bonded Polymeric Zwitterionic Stationary Phase...
Oct 13, 2026 - Using a bonded polymeric zwitterionic stationary phase, in HILIC mode, polar quaternary herbicides like Diquat can easily be retained, with good peak symmetry.
quaternary ammonium compoundsstationary phaseseparationusingbonded
https://collections.nlm.nih.gov/?f%5Bdrep2.subjectAggregate%5D%5B%5D=Quaternary+Ammonium+Compounds+--+therapeutic+use&per_page=10&sort=drep3.titleSortForm+asc
Subjects: Quaternary Ammonium Compounds -- therapeutic use - Digital Collections - National Library...
quaternary ammonium compoundsdigital collectionsnational librarysubjectstherapeutic