dl-2-Aminobutyric acid

• Formula: C₄H₉NO₂
• Molecular weight: 103.1198
• IUPAC Standard InChI: InChI=1S/C4H9NO2/c1-2-3(5)4(6)7/h3H,2,5H2,1H3,(H,6,7) Copy

  
• IUPAC Standard InChIKey: QWCKQJZIFLGMSD-UHFFFAOYSA-N Copy
• CAS Registry Number: 2835-81-6
• 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.
• Species with the same structure:
  • dl-2-Aminobutyric acid
• Stereoisomers:
  • Butyric acid, 2-amino-, l-(+)-
  • Butanoic acid, 2-amino-, (S)-
• Other names: dl-2-Amino-n-butyric acid; 2-Aminobutyric acid; dl-α-Amino-n-butyric acid; Butanoic acid, 2-amino-, (.+/-.)-; Aminobutyric acid,-2-; Butyric acid, 2-amino-, DL-; DL-2-Aminobutanoic acid; 2-Aminobutyric acid, dl; Butanoic acid, 2-amino-; Butyrine; NSC 3251; α-Aminobutyric acid; Butyric acid, dl-2-amino-, beta-form; (±)-2-aminobutyric acid
• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes

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

Contineanu and Marchidan, 1994
Contineanu, J.; Marchidan, D.I., The enthalpies of combustion and formation of some isomers of aminobutyric (aminobutanoic) acid, Rev. Roum. Chim., 1994, 39, 1391-1395. [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]

de Kruif, Voogd, et al., 1979
de Kruif, C.G.; Voogd, J.; Offringa, J.C.A., Enthalpies of sublimation and vapour pressures of 14 amino acids and peptides, The Journal of Chemical Thermodynamics, 1979, 11, 7, 651-656, https://doi.org/10.1016/0021-9614(79)90030-2 . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, References

• Symbols used in this document:
  

  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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