Pteridine
Title: Pteridine
CAS Registry Number: 91-18-9
Additional Names: Pyrazino[2,3-d]pyrimidine; pyrimido[4,5-b]pyrazine; pyrimidine-4¢,5¢:2,3-pyrazine; 1,3,5,8-tetraazanaphthalene; azinepurine; benzotetrazine
Molecular Formula: C6H4N4
Molecular Weight: 132.12
Percent Composition: C 54.54%, H 3.05%, N 42.41%
Literature References: Prepn from 4,5-diaminopyrimidine and polyglyoxal or glyoxal sodium bisulfite: Albert et al., J. Chem. Soc. 1951, 474.
Properties: Yellow crystals from benzene, mp 138-138.5°. uv max (water): 298, 309 nm (log e 3.87, 3.83). Sol in 7.2 parts water at 20-25°.
Melting point: mp 138-138.5°
Absorption maximum: uv max (water): 298, 309 nm (log e 3.87, 3.83)
CAUTION: Related to folic acid antagonists.

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