Structure via PubChem · Public domain (PubChem)
pyridazine
Sign in to saveAlso known as o-diazine, orthodiazine, 1,2-diazine
Pyridazine is an aromatic, heterocyclic, organic compound with the molecular formula . It contains a six-membered ring with two adjacent nitrogen atoms. It is a colorless liquid with a boiling point of 208 °C. It is isomeric with two other diazine () rings, pyrimidine and pyrazine.
Chemical data
- Formula
- C4H4N2
- Molecular weight
- 80.09 g/mol
- IUPAC name
- pyridazine
- SMILES
- C1=CC=NN=C1
- InChIKey
- PBMFSQRYOILNGV-UHFFFAOYSA-N
- XLogP
- -0.7
- Polar surface area
- 25.8 Ų
- H-bond donors
- 0
- H-bond acceptors
- 2
- Formal charge
- 0
via PubChem
Drug data · ChEMBL
- Molecule type
- Small molecule
via ChEMBL · EBI
Wikidata facts
- Subclass of
- chemical compound
- Has part
- hydrogen
- Mass
- 80.037
Show 8 more facts
- chemical formula
- C₄H₄N₂
- Commons category
- Pyridazine
- canonical SMILES
- C1=CC=NN=C1
- ionization energy
- 8.64
- melting point
- -8.0
- has characteristic
- bitterness
- boiling point
- 208
- electric dipole moment
- 4.22
Sources (2)
via Wikidata · CC0
~1 min read
Encyclopedic overview
3 sectionsContents
- Occurrence
- Synthesis
- References
Pyridazine is an aromatic, heterocyclic, organic compound with the molecular formula . It contains a six-membered ring with two adjacent nitrogen atoms. It is a colorless liquid with a boiling point of 208 °C. It is isomeric with two other diazine () rings, pyrimidine and pyrazine.
==Occurrence== Pyridazines are rare in nature, possibly reflecting the scarcity of naturally occurring hydrazines, common building blocks for the synthesis of these heterocycles. The pyridazine structure is a popular pharmacophore which is found within a number of herbicides such as credazine, pyridafol and pyridate. It is also found within the structure of several drugs such as cefozopran, cadralazine, minaprine, pipofezine, and hydralazine.
Excerpted from Wikipedia’s “pyridazine” article, available under the CC BY-SA 4.0 licence.