4-Aminobutanoic acid
- Formula: C4H9NO2
- Molecular weight: 103.1198
- IUPAC Standard InChIKey: BTCSSZJGUNDROE-UHFFFAOYSA-N
- CAS Registry Number: 56-12-2
- 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: γ-Aminobutyric acid; 4-Aminobutyric acid; 4-Amino-n-butyric acid; γ-Amino-n-butyric acid; Butanoic acid, 4-amino-; γ-Aminobutanoic acid; Aminalon; Aminobutyric acid,-4-; Butyric acid, 4-amino-; DF 468; Gaballon; Gamarex; Gamastan; Gammagee; Gammalon; Gammalone; Gammar; Gammasol; Gamulin; Globulin, immune human serum; GABA; Immu-G; Immuglobin; Mielogen; Mielomade; Reanal; ω-Aminobutyric acid; 3-Carboxypropylamine; NSC 27418; Piperidic acid; Piperidinic acid
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Condensed phase thermochemistry data
Go To: Top, References, Notes
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -134. ± 1.1 | kcal/mol | Ccb | Contineanu and Marchidan, 1994 | ALS |
ΔfH°solid | -138.87 ± 0.07 | kcal/mol | Ccb | Skoulika and Sabbah, 1983 | see Skoulika and Sabbah, 1982; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -545. ± 1.1 | kcal/mol | Ccb | Contineanu and Marchidan, 1994 | ALS |
ΔcH°solid | -544.749 ± 0.026 | kcal/mol | Ccb | Skoulika and Sabbah, 1983 | see Skoulika and Sabbah, 1982; ALS |
ΔcH°solid | -545.50 ± 0.20 | kcal/mol | Ccb | Strepikheev, Skuratov, et al., 1955 | Reanalyzed by Cox and Pilcher, 1970, Original value = -545.7 kcal/mol; At 293 °K; ALS |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
31.93 | 298. | Skoulika and Sabbah, 1983 | DH |
34.99 | 298.15 | Spink and Wads, 1975 | DH |
References
Go To: Top, Condensed phase thermochemistry 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]
Skoulika and Sabbah, 1983
Skoulika, S.; Sabbah, R.,
Thermodynamique de composes azotes X. Etude thermochimique de quelques acides ω-amines,
Thermochim. Acta, 1983, 61, 203-214. [all data]
Skoulika and Sabbah, 1982
Skoulika, S.; Sabbah, R.,
Enthalpy of formation of some ω-amino acids in the solid state,
C. R. Seances Acad. Sci., Ser. 2, 1982, 295, 657-660. [all data]
Strepikheev, Skuratov, et al., 1955
Strepikheev, A.A.; Skuratov, S.M.; Shtekher, S.M.; Muromova, R.S.; Brykina, E.P.; Kachinskaya, O.N.,
Mutual interaction of amino and carboxyl groups in amino acids,
Dokl. Akad. Nauk SSSR, 1955, 102, 543-545. [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]
Spink and Wads, 1975
Spink, C.H.; Wads, I.,
Thermochemistry of solutions of biochemical model compounds. 4. The partial molar heat capacities of some amino acids in aqueous solution,
J. Chem. Thermodynam., 1975, 7, 561-572. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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