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Names | |
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Preferred IUPAC name 1-Methylpyridin-1-ium | |
Other names N-Methylpyridinium | |
Identifiers | |
3D model (JSmol) | |
ChemSpider | |
PubChem CID | |
CompTox Dashboard (EPA) | |
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Properties | |
C6H8N+ | |
Molar mass | 94.134 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Methylpyridinium is an ion with the formula C5H5NCH+3. It is the N-methylated derivative of pyridine. It confers no color to its salts. The ion is classified as a quaternary ammonium ion. [1]
Methylpyridinium is prepared by treating pyridine with dimethylsulfate: [2]
It is found in some coffee products. [3] It is not present in unroasted coffee beans, but is formed during roasting from its precursor chemical, trigonelline. [3]
The chloride salt of N-methylpyridinium behaves as an ionic liquid. Mixtures of that salt and zinc chloride have been characterised over the temperature range 150–200 °C (423–473 K). [4] [5] [6] [7]