Pyrazine
Properties
- Molecular formula
- C4H4N2
- Molar mass
- 80.09 g/mol
- Exact mass
- 80.0374 Da
- Melting point
- 55 °C
- Boiling point
- 115 °C
- logP
- 0.48Crippen estimate
- Polar surface area
- 25.8 Ų
- H-bond donors / acceptors
- 0 / 2
- Rotatable bonds
- 0
Hazards
Danger
- H225 Highly Flammable liquid and vapor47.9% of notifiers
- H228 Flammable solid44.2% of notifiers
- H315 Causes skin irritation99.4% of notifiers
- H319 Causes serious eye irritation99.4% of notifiers
- H335 May cause respiratory irritation98.8% of notifiers
Aggregated from 165 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.
Precautionary statements
P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, P501
Identifiers
CAS number
290-37-9SMILES
c1cnccn1InChIKey
KYQCOXFCLRTKLS-UHFFFAOYSA-NInChI
InChI=1S/C4H4N2/c1-2-6-4-3-5-1/h1-4HWeigh it out
Type any one amount. The others follow from the molar mass.
Names and synonyms
6 names
- 1,4-Diazabenzene
- 1,4-Diazine
- Paradiazine
- Piazine
- p-Diazine
- NSC 400221
Work with Pyrazine
Predict the NMR spectrum1H and 13C shifts with multiplicities
Make a solutionWhat to weigh for any molarity and volume
Check drug-likenessLipinski, Veber and lead-likeness
Boiling point under vacuumAt any pressure, from its normal boiling point
Isotope patternExact mass and the mass spectrum pattern
Similar compounds
Pyridine110-86-150 % similar
4,4′-Bipyridine553-26-442 % similar
1,4-Bis(pyrid-4-yl)benzene113682-56-738 % similar
Pyridinium hydrobromide18820-82-138 % similar
Hydrofluoric acid pyridine complex32001-55-138 % similar
Poly(pyridine fluoride)62778-11-438 % similar
Pyridinium chloride628-13-738 % similar
1,2-Bis(4-pyridyl)ethane4916-57-836 % similar
Tanimoto similarity of circular fingerprints over the whole catalogue.