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91-18-9

91-18-9 Structure

91-18-9 Structure
IdentificationBack Directory
[Name]

Pteridine (6CI,7CI,8CI,9CI)
[CAS]

91-18-9
[Synonyms]

pteridine
Pteridene
Azinepurine
1,3,5,8-Tetraazanaphthalene
Pteridine (6CI,7CI,8CI,9CI)
Inchi=1/C6H4N4/C1-2-9-6-5(8-1)3-7-4-10-6/H1-4
[Molecular Formula]

C6H4N4
[MDL Number]

MFCD11109361
[MOL File]

91-18-9.mol
[Molecular Weight]

132.12
Chemical PropertiesBack Directory
[Melting point ]

138-138.5°
[Boiling point ]

234.02°C (rough estimate)
[density ]

1.3363 (rough estimate)
[refractive index ]

1.7000 (estimate)
[pka]

4.05(at 20℃)
[Water Solubility ]

122g/L(22.5 ºC)
Hazard InformationBack Directory
[Definition]

ChEBI: Pteridine is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of pteridines.
[Purification Methods]

It crystallises from EtOH, *benzene, n-hexane, n-heptane or pet ether. It is best purified by sublimation at 120-130o/20mm. Store at 0o, in the dark. It turns green in the presence of light and on long standing in the dark and sublimation leaves the dark-coloured material behind. [Albert et al. J Chem Soc 474 1951; see Albert & Armarego Adv Heterocycl Chem 4 1 1965, Beilstein 26 III/IV 1770.]
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