2,4(1H,3H)-Pyrimidinedione, 1,3,5-trimethyl-

• Formula: C₇H₁₀N₂O₂
• Molecular weight: 154.1665
• IUPAC Standard InChI: InChI=1S/C7H10N2O2/c1-5-4-8(2)7(11)9(3)6(5)10/h4H,1-3H3 Copy

  
• IUPAC Standard InChIKey: BHWQEVXICGSHEW-UHFFFAOYSA-N Copy
• CAS Registry Number: 4401-71-2
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Uracil, 1,3,5-trimethyl-; 1,3-Dimethylthymine
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• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

Enthalpy of fusion

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Zielenkiewicz, Zielenkiewicz, et al., 1984
Zielenkiewicz, A.; Zielenkiewicz, W.; Malanowski, S., Thermodynamic Excess Functions of Dilute Aqueous Solutions of Alkylated Pyrimidines and Aminopurines and Caffeine, Thermochim. Acta, 1984, 74, 95. [all data]

Kami nski and Zielenkiewicz, 1996
Kami nski, Miron; Zielenkiewicz, Wojciech, Vapour pressures and molar enthalpies of sublimation for 5-alkyl derivatives of 1,3-dimethyluracil, The Journal of Chemical Thermodynamics, 1996, 28, 2, 153-158, https://doi.org/10.1006/jcht.1996.0013 . [all data]

Teplitsky, Yanson, et al., 1980
Teplitsky, A.B.; Yanson, I.K.; Glukhova, O.T.; Zielenkiwicz, A.; Zielenkiewicz, W.; Wierzchowski, K.L., Thermochemistry of aqueous solutions of alkylated nucleic acid bases, Biophysical Chemistry, 1980, 11, 1, 17-21, https://doi.org/10.1016/0301-4622(80)85003-4 . [all data]

Verkin, Sukodub, et al., 1976
Verkin, B.I.; Sukodub, L.F.; Yanson, I.K., Ionization potentials of nitrogenous bases of of nucleic acids, Dokl. Akad. Nauk SSSR, 1976, 228, 1452. [all data]

Notes

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• Symbols used in this document:
  

  Tfus	Fusion (melting) point
  ΔfusH	Enthalpy of fusion
  ΔsubH	Enthalpy of sublimation

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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