6-Azathymine
Title: 6-Azathymine
CAS Registry Number: 932-53-6
CAS Name: 6-Methyl-1,2,4-triazine-3,5(2H,4H)-dione
Additional Names: 5-methyl-6-azauracil; 3,5-dihydroxy-6-methyl-1,2,4-triazine
Molecular Formula: C4H5N3O2
Molecular Weight: 127.10
Percent Composition: C 37.80%, H 3.97%, N 33.06%, O 25.18%
Literature References: Prepn: Thiele, Bailey, Ann. 303, 82 (1898); Bailey, Am. Chem. J. 28, 386 (1902); Bougault, Daniel, Compt. Rend. 186, 1216 (1928); Chang, J. Org. Chem. 23, 1951 (1958).
Properties: Crystals from water. mp 210-212°. pKa 7.6. uv max (0.1N HCl): 261 nm (e 5200); in 0.1N NaOH: 246 nm (e 4770).
Melting point: mp 210-212°
pKa: pKa 7.6
Absorption maximum: uv max (0.1N HCl): 261 nm (e 5200)

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