Picoline-N-oxide
Picoline-N-oxide describes any of three isomers with the formula. All are colorless solids. Their properties and those of pyridine-N-oxide are similar.
| Parameter | 2-Picoline-N-oxide | 3-Picoline-N-oxide | 4-Picoline-N-oxide |
| Melting point | 48-50 | 39 | 184 |
| Boiling point | 89-90 | 156 | 122-124 |