P57204

Pyridazine

98%

• Synonym(s): 1,2-Diazabenzene, 1,2-Diazine, o-Diazine
• Empirical Formula (Hill Notation): C₄H₄N₂
• CAS Number: 289-80-5
• Molecular Weight: 80.09
• Beilstein: 103906
• EC Number: 206-025-5
• MDL number: MFCD00006463
• UNSPSC Code: 12352100
• PubChem Substance ID: 24898697
• NACRES: NA.22

Properties

• Assay: 98%
• refractive index: n20/D 1.524 (lit.)
• bp: 208 °C (lit.)
• mp: −8 °C (lit.)
• density: 1.103 g/mL at 25 °C (lit.)
• SMILES string: c1ccnnc1
• InChI: 1S/C4H4N2/c1-2-4-6-5-3-1/h1-4H
• InChI key: PBMFSQRYOILNGV-UHFFFAOYSA-N

Description

General description

Pyridazine is a mono-basic 1,2-diazine compound, which is commonly prepared by the reaction of 1,4-dicarbonyls with hydrazines. Pyridazine ring is found in many herbicides like credazine, pyridatol and many pharmaceutical drugs like cefozopran, olaparib, talazoparib, and cadralazine.

Application

Pyridazine can be used:

• As a building block to synthesize N-phenyl-4-pyrazolo[1,5-b]pyridazin-3-yl-pyrimidin-2-amine derivatives as GSK-3 inhibitors.
• As a starting material in the synthesis of pharmacologically important pyrrolo[1,2-b]pyridazine derivatives.
• To prepare 1-(6-ethoxy-6-oxohexyl)pyridazin-1-ium bromide and 1-(2-bromoacetyl) pyridazinium bromide ionic liquids as corrosion inhibitors of steel under acidic conditions.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): 185.0 °F - closed cup
• Flash Point(C): 85 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves