Title: 6-Methyluracil
CAS Registry Number: 626-48-2
CAS Name: 6-Methyl-2,4(1H,3H)-pyrimidinedione
Additional Names: 4-methyluracil
Molecular Formula: C5H6N2O2
Molecular Weight: 126.11
Percent Composition: C 47.62%, H 4.80%, N 22.21%, O 25.37%
Literature References: Prepn: Boese, US 2138756 (1938 to Carbide and Carbon Chem.); Gleason, US 2174239 (1939 to Standard Oil). Synthesis from urea and ethyl acetoacetate: J. J. Donleavy, M. A. Kise, Org. Synth. coll. vol. II, 422 (1943); by isomerization of 2-hydroxy-4-methoxy-6-methylpyrimidine: McOmie et al., J. Chem. Soc. 1957, 1830; from urea and diketene: Khromov-Borisov, Karlinskaya, J. Gen. Chem. USSR 26, 1728 (1956); SU 101690 (1955), C.A. 51, 12989f (1957).
Properties: Crystals from glacial acetic acid, dec >300°. uv max: 277 nm (log e 3.83). pH of aq soln 13.
Absorption maximum: uv max: 277 nm (log e 3.83) |