La picoline est le nom donné aux 3 différents isomères de la méthylpyridine, un dérivé méthylé de la pyridine. La formule chimique brute est C6H7N et la masse molaire des ces isomères vaut 93.13 g/mol. Les 3 isomères sont des liquides incolores à température et pression ambiante. Ces isomères sont principalement utilisés comme précurseurs dans de nombreuses réactions pour la production de produits agrochimiques et pharmaceutiques

Le numéro CAS pour la picoline non-caractérisée est le 1333-41-1.

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