β-Alanine

β-Alanine (or beta-alanine) is a naturally occurring beta amino acid, which is an amino acid in which the amino group is attached to the β-carbon (i.e. the carbon two carbon atoms away from the carboxylate group) instead of the more usual α-carbon for alanine (α-alanine). The IUPAC name for β-alanine is 3-aminopropanoic acid. Unlike its counterpart α-alanine, β-alanine has no stereocenter.

β-Alanine
Names
IUPAC name
β-Alanine
Systematic IUPAC name
3-Aminopropanoic acid
Other names
3-Aminopropionic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.003.215
EC Number
  • 203-536-5
KEGG
UNII
  • InChI=1S/C3H7NO2/c4-2-1-3(5)6/h1-2,4H2,(H,5,6) Y
    Key: UCMIRNVEIXFBKS-UHFFFAOYSA-N Y
  • InChI=1/C3H7NO2/c4-2-1-3(5)6/h1-2,4H2,(H,5,6)
    Key: UCMIRNVEIXFBKS-UHFFFAOYAL
  • O=C(O)CCN
Properties
C3H7NO2
Molar mass 89.093 g/mol
Appearance white bipyramidal crystals
Odor odorless
Density 1.437 g/cm3 (19 °C)
Melting point 207 °C (405 °F; 480 K) (decomposes)
54.5 g/100 mL
Solubility soluble in methanol. Insoluble in diethyl ether, acetone
log P -3.05
Acidity (pKa)
  • 3.55 (carboxyl; H2O)
  • 10.24 (amino; H2O)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant
NFPA 704 (fire diamond)
2
1
0
Lethal dose or concentration (LD, LC):
1000 mg/kg (rat, oral)
Safety data sheet (SDS)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references
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