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293768

Sigma-Aldrich

1-Methyluracil

99%

Synonym(s):

1-Methyl-2,4(1H,3H)-pyrimidinedione

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About This Item

Empirical Formula (Hill Notation):
C5H6N2O2
CAS Number:
Molecular Weight:
126.11
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

99%

mp

236-238 °C (lit.)

solubility

1 M NaOH: soluble 50 mg/mL, clear, colorless

SMILES string

CN1C=CC(=O)NC1=O

InChI

1S/C5H6N2O2/c1-7-3-2-4(8)6-5(7)9/h2-3H,1H3,(H,6,8,9)

InChI key

XBCXJKGHPABGSD-UHFFFAOYSA-N

General description

1-Methyluracil is of special importance in biochemistry, since uracil attaches ribose in ribonucleic acid (RNA) just precisely at the N1 atom. H-bond complex formation between 1-methyluracil and glycine has been investigated by theoretical calculations and FT-IR spectroscopy in Ar matrices. It forms 1:1 complexes with 9-ethyl-8-bromo-2,6-diaminopurine and the complex structure has been determined by three-dimensional X-ray diffraction methods.

Pictograms

Health hazard

Signal Word

Warning

Hazard Statements

Hazard Classifications

Carc. 2

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Bram Boeckx et al.
The journal of physical chemistry. B, 116(39), 11890-11898 (2012-09-12)
The H-bond complex formation between 1-methyluracil and glycine has been investigated by theoretical calculations and the most stable complex configurations have been identified by FT-IR spectroscopy in Ar matrices. The importance of this H-bonding system is huge since all DNA
V I Poltev et al.
Molekuliarnaia biologiia, 29(2), 365-375 (1995-03-01)
Monte Carlo simulation of hydration of keto and enol tautomers of 9-methylguanine (G) and 1-methyluracil (U) has been performed in relation to a possible role of tautomer transitions of DNA bases in mutagenesis. The comparison of the simulation results with
V I Poltev et al.
Journal of biomolecular structure & dynamics, 9(1), 101-111 (1991-08-01)
A number of nucleic acid base pairs and complexes between the bases and the amide group of acrylamide have been studied experimentally by using mass spectrometry and theoretically by the method of atom-atom potential function calculations. It has been found
R K McMullan et al.
Acta crystallographica. Section B, Structural science, 45 ( Pt 3), 270-276 (1989-06-01)
The crystal structure of 1-methylpyrimidine-2,4-dione (1-methyluracil, C5H6N2O2) has been determined at 15, 60 and 123 K from neutron diffraction data. Molecules lie in the eightfold special positions (symmetry m) of space group Ibam, with a = 13.213 (2), b =
G L Bilich et al.
Haematologia, 15(1), 71-81 (1982-01-01)
Enzyme activities in the circulating lymphocytes permit to judge the character of the regenerative process in the lung, and the severity of the patient's condition; it helps in estimating the prognosis and in evaluating the efficacy of the applied therapy.

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