![]() | |
![]() | |
Names | |
---|---|
Preferred IUPAC name
Pyridine-4-carbaldehyde | |
Other names
4-formylpyridine, 4-pyridinaldehyde, isonicotinaldehyde
| |
Identifiers | |
3D model (
JSmol)
|
|
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.011.666 |
EC Number |
|
PubChem
CID
|
|
UNII | |
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
C6H5NO | |
Molar mass | 107.112 g·mol−1 |
Appearance | colorless liquid |
Melting point | 4 °C (39 °F; 277 K) |
Boiling point | 198 °C (388 °F; 471 K) |
Acidity (pKa) | 4.72 |
Hazards | |
GHS labelling: | |
![]() | |
Warning | |
H315, H317, H319, H335 | |
P261, P264, P271, P272, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P333+P313, P337+P313, P362, P363, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Pyridine-4-carbaldehyde is an organic compound with the formula C5H4NCHO. It is one of three isomeric pyridinaldehydes. The other isomers are pyridine-2-carboxaldehyde and pyridine-3-carboxaldehyde. Pyridine-4-carboxaldehyde is a colorless liquid, although aged samples can appear yellow or even brown. It undergoes many reactions expected for aromatic aldehydes such as reductive amination and Schiff base formation. [1] It condenses with pyrrole to give tetrapyridyl porphyrin. [2] The pKa has been experimentally determined by NMR spectroscopy to be 4.72. [3]
![]() | |
![]() | |
Names | |
---|---|
Preferred IUPAC name
Pyridine-4-carbaldehyde | |
Other names
4-formylpyridine, 4-pyridinaldehyde, isonicotinaldehyde
| |
Identifiers | |
3D model (
JSmol)
|
|
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.011.666 |
EC Number |
|
PubChem
CID
|
|
UNII | |
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
C6H5NO | |
Molar mass | 107.112 g·mol−1 |
Appearance | colorless liquid |
Melting point | 4 °C (39 °F; 277 K) |
Boiling point | 198 °C (388 °F; 471 K) |
Acidity (pKa) | 4.72 |
Hazards | |
GHS labelling: | |
![]() | |
Warning | |
H315, H317, H319, H335 | |
P261, P264, P271, P272, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P333+P313, P337+P313, P362, P363, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Pyridine-4-carbaldehyde is an organic compound with the formula C5H4NCHO. It is one of three isomeric pyridinaldehydes. The other isomers are pyridine-2-carboxaldehyde and pyridine-3-carboxaldehyde. Pyridine-4-carboxaldehyde is a colorless liquid, although aged samples can appear yellow or even brown. It undergoes many reactions expected for aromatic aldehydes such as reductive amination and Schiff base formation. [1] It condenses with pyrrole to give tetrapyridyl porphyrin. [2] The pKa has been experimentally determined by NMR spectroscopy to be 4.72. [3]