from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The cationic form of pyridine.
  • n. An individual pyridinium cation.


pyridine +‎ -ium (Wiktionary)


  • Methylation, to give 2-hydroxy-4-methoxymethyl benzoate, followed by reduction to yield 2-hydroxy-4-methoxybenzyl alcohol, and then partial oxidation of the primary alcohol with pyridinium chlorochromate

    Chapter 7

  • Fleisher JH, Harris LW, Murtha EF (1967) Reactivation by pyridinium aldoxime methochloride (PAM) of inhibited cholinesterase activity in dogs after poisoning with pinacolyl methylphosphonofluoridate (soman).

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  • Design: We determined the ratio of pyridinium and dehydrodihydroxylysinonorleucine collagen cross-links in 46 iliac crest bone biopsies from patients with PHPT (14 men, aged 28-68 yr; 32 women, aged 26-74 yr) by Fourier transform infrared imaging.

    The Journal of Clinical Endocrinology & Metabolism Current Issue

  • Results: PHPT patients exhibited significantly lower pyridinium to dehydrodihydroxylysinonorleucine collagen cross-links ratio, compared with normal controls.

    The Journal of Clinical Endocrinology & Metabolism Current Issue

  • As a positive control for the PM, we used N - (3 triethylammoniumpropyl) - 4 - (6 - (4 (diethyla ​ mino) phenyl) hexatrienyl) pyridinium dibromide (FM4-64), which stains the PM of protoplast cells.

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  • AMTSn with 4-amino-pyridinium and bromide, respectively, for the purpose of retaining affinity while reducing reactivity toward Cys residues "in general" (

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