D-Alanine

• Formula: C₃H₇NO₂
• Molecular weight: 89.0932
• IUPAC Standard InChI: InChI=1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)/t2-/m0/s1 Copy

  
• IUPAC Standard InChIKey: QNAYBMKLOCPYGJ-REOHCLBHSA-N Copy
• CAS Registry Number: 338-69-2
• 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.
• Stereoisomers:
  • dl-Alanine
  • Alanine
  • 2-aminopropanoic acid
• Other names: D-α-Alanine; D-(-)-Alanine; Alanine, D-; Ba 2776; D(-)-α-Alanine
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Mass spectrum (electron ionization)
  • References
  • Notes
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Condensed phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of solid

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 by: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Notes

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

Contineanu and Marchidan, 1984
Contineanu, I.; Marchidan, D.I., The enthalpies of combustion and formation of D-alanine, L-alanine, DL-alanine, and β-alanine, Rev. Roum. Chim., 1984, 29, 43-48. [all data]

Huffman, Ellis, et al., 1936
Huffman, H.M.; Ellis, E.L.; Fox, S.W., Thermal data. VI. The heats of combustion and free energies of seven organic compounds containing nitrogen, J. Am. Chem. Soc., 1936, 58, 1728-1733. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Emery and Benedict, 1911
Emery, A.G.; Benedict, F.G., The heat of combustion of compounds of physiological importance, Am. J. Physiol., 1911, 28, 301-307. [all data]

Wrede, 1911
Wrede, F., Uber die Bestimmung von Berbrennungswarmen mittels der kalorimetrischen Bombe unter Benutzung des Platinwiderstandsthermometers, Z. Phys. Chem. (Leipzig), 1911, 81-94. [all data]

Huffman and Borsook, 1932
Huffman, H.M.; Borsook, H., Thermal data. I. The heat capacities, entropies and free energies of seven organic compounds containing nitrogen, J. Am. Chem. Soc., 1932, 54, 4297-4301. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Svec and Clyde, 1965
Svec, H.J.; Clyde, D.D., Vapor Pressures of Some α-Amino Acids., J. Chem. Eng. Data, 1965, 10, 2, 151-152, https://doi.org/10.1021/je60025a024 . [all data]

Cox and Pilcher, 1970, 2
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Clyde and Svec, 1964
Clyde, D.D.; Svec, H., , U. S. Atomic Energy Comm. IS-790, 1964, 1. [all data]

Chiarelli and Gross, 1989
Chiarelli, M. Paul.; Gross, Michael L., Amino acid and tripeptide mixture analysis by laser desorption Fourier-transform mass spectrometry, Anal. Chem., 1989, 61, 17, 1895-1900, https://doi.org/10.1021/ac00192a023 . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  Cp,solid	Constant pressure heat capacity of solid
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔsubH	Enthalpy of sublimation

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