Picoline

Molecular formulae of the three isomers of picoline (methylpyridine)
Molecular formulae of the three isomers of picoline (methylpyridine)

Picoline refers to any of three isomers of methylpyridine (CH3C5H4N). They are all colorless liquids with a characteristic smell similar to that of pyridine. They are miscible with water and most organic solvents.