Alanine (data page)

The complete data for Alanine

General information

Chemical formula: C₃H₇N O₂
Molar mass: 89.1 g·mol⁻¹
Systematic name:
(S)-2-aminopropanoic acid
Abbreviations: A, Ala
Synonyms:
2-aminopropanoic acid
{α/2}-aminopropionic acid
AIDS{-}071780
HSDB 1801
NSC 206315

Database data

SMILES: N[C@@]([H])(C)C(O)=O
InChI=1/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)/f/h5H

ATC: N/A

CAS: 338-69-2 (D), 56-41-7 (L)

DrugBank: N/A

EINECS:
206-418-1 (D)^a, 200-273-8 (L)^a

PubChem: 602 (D)^a, 5950 (L)^a

Physical properties

Structure

Crystal data

Spectral data

UV-Vis

NMR

MS
- Masses of main fragments:
Alanine GC-MS spectrum

Phase behavior

Solid properties

ρ_solid: 1.401 g.cm⁻³
T_m: 297 °C

Liquid properties

Gas properties

Hazard properties

MSDS N/A

Main hazards:

- N/A

NFPA 704

Flash point

- N/A

R/S statement

R: N/A
S: N/A

RTECS number:
N/A

Chemical properties

XLogP: -2.912

pI: 6.00

pK_a: 2.33, 9.71

Tautomers:

Hydrogen bond: donor - 2; acceptor - 3

Pharmacological properties

Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

References

^a 206-418-1 EINECS for D-alanine
^a 200-273-8 EINECS for L-alanine
^a CID 602 from PubChem
^a CID 5950 from PubChem

The encoded amino acid

General topics

By properties

Aliphatic	Branched-chain amino acids (Valine Isoleucine Leucine) Methionine Alanine Proline Glycine

Aromatic	Phenylalanine Tyrosine Tryptophan Histidine

Polar, uncharged	Asparagine Glutamine Serine Threonine

Positive charge (pK_a)	Lysine (≈10.8) Arginine (≈12.5) Histidine (≈6.1)

Negative charge (pK_a)	Aspartic acid (≈3.9) Glutamic acid (≈4.1) Cysteine (≈8.3) Tyrosine (≈10.1)

Other classifications

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