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Revision as of 15:40, 25 January 2014

Pyridazine
Skeletal formula with numbering convention
Pyridazine molecule
C=black, H=white, N=blue
Pyridazine molecule
C=black, H=white, N=blue
Names
IUPAC name Pyridazine
Other names 1,2-diazine, orthodiazine, oizine
Identifiers
CAS Number
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.005.478 Edit this at Wikidata
PubChem CID
RTECS number
  • GY2390000
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C4H4N2/c1-2-4-6-5-3-1/h1-4HKey: PBMFSQRYOILNGV-UHFFFAOYSA-N
  • InChI=1/C4H4N2/c1-2-4-6-5-3-1/h1-4HKey: PBMFSQRYOILNGV-UHFFFAOYAA
SMILES
  • c1ccnnc1
Properties
Chemical formula C4H4N2
Molar mass 80.09 g/mol
Appearance colorless liquid
Density 1.107 g/cm
Melting point −8 °C (18 °F; 265 K)
Boiling point 208 °C (406 °F; 481 K)
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Pyridazine is a heteroaromatic organic compound with the molecular formula C4H4N2, sometimes called 1,2-diazine. It contains a six-membered ring with two adjacent nitrogen atoms. It is a colorless liquid with a boiling point of 208 °C.

The pyridazine structure 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, hydralazine, and cilazapril. These heterocycles are often prepared via condensation of 1,4-diketones or 4-ketoacids and hydrazine]].

References

  1. M. Tišler, B. Stanovnik "Pyridazines" Advances in Heterocyclic Chemistry, Volume 9, 1968, Pages 211-320. http://dx.doi.org/10.1016/S0065-2725(08)60374-8
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