Pyrazine is a symmetrical molecule. it is found in vitamin B-10 in the form of pteridine. Derivatives like Phenazine are well known for their antitumor, antibiotic and diuretic activity. Pyrazine is less basic in nature than pyridine, pyridazine and pyrimidine. Phenazine Phenazine (C12H8N2 or C6H4N2C6H4), also called azophenylene, dibenzo-p-diazine, dibenzopyrazine, and acridizine, is the parent substance of many dyestuffs, such as the eurhodines, toluylene red, indulines and safranines. ...

Pyrazine
Chemical name	Pyrazine
Chemical formula	C4H4N2
Molecular mass	80.09 g/mol
Melting point	52 °C
Boiling point	115 °C
CAS number	290-37-9
SMILES	C1=NC=CN=C1

Pyrazine is a heterocyclic aromatic organic compound. IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... The molecular mass (abbreviated MM) of a substance, called molecular weight and abbreviated as MW, is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ... Image File history File links Pyrazine_chemical_structure. ... Heterocyclic compounds are substances which contain a ring structure as found in benzene and the aromatic compounds, or aromatic hydrocarbons, but in which other atoms than carbon, such as sulfur, oxygen or nitrogen are found as part of the ring. ... In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ... An organic compound is any member of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, carbon oxides and gases containing carbon. ...

See also

• Pyrimidine, an analog with the second nitrogen atom in position 3.
• Pyridazine, an analog with the second nitrogen atom in position 2.
• Pyridine, an analog with only one nitrogen atom.
• Benzene, an analog without the nitrogen atoms.
• Simple aromatic rings