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Substance Name: Threonine [USAN:INN]
RN: 72-19-5
UNII: 2ZD004190S
InChIKey: AYFVYJQAPQTCCC-GBXIJSLDSA-N

Note

  • An essential amino acid occurring naturally in the L-form, which is the active form. It is found in eggs, milk, gelatin, and other proteins.

Molecular Formula

  • C4-H9-N-O3

Molecular Weight

  • 119.1191
 

Classification Codes

  • Amino Acid
  • Mutation Data
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Names and Synonyms

Name of Substance

  • 2-Amino-3-hydroxybutyric acid
  • L-Threonine
  • Threonine
  • Threonine [USAN:INN]

MeSH Heading

  • Threonine

Synonyms

  • (S)-Threonine
  • 2-Amino-3-hydroxybutanoic acid, (R-(R*,S*))-
  • Butanoic acid, 2-amino-3-hydroxy-, (R-(R*,S*))-
  • EINECS 200-774-1
  • HSDB 7797
  • L-Threonine
  • NSC 16589
  • NSC 46701
  • Threonin
  • Threonine
  • Threonine (VAN)
  • Threoninum
  • Threoninum [Latin]
  • Treonina
  • Treonina [Spanish]
  • UNII-2ZD004190S

Systematic Name

  • L-Threonine

Superlist Name

  • Threonine, L-

Registry Numbers

CAS Registry Number

  • 72-19-5

FDA UNII

  • 2ZD004190S

Other Registry Numbers

  • 1043597-96-1
  • 13095-55-1
  • 1370710-06-7
  • 154605-64-8
  • 154605-68-2
  • 1644578-86-8
  • 25275-17-6
  • 36676-50-3

System Generated Number

  • 0000072195

Structure Descriptors

InChI

1S/C4H9NO3/c1-2(6)3(5)4(7)8/h2-3,6H,5H2,1H3,(H,7,8)/t2-,3+/m1/s1

InChIKey

AYFVYJQAPQTCCC-GBXIJSLDSA-N

Smiles

[C@H]([C@H](O)C)(C(=O)O)N

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 intraperitoneal 3098mg/kg (3098mg/kg) BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
Archives of Biochemistry and Biophysics. Vol. 58, Pg. 253, 1955.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 256 dec deg C   EXP
log P (octanol-water) -2.94E+00 (none)   EXP
Water Solubility 9.70E+04 mg/L 25 EXP
Vapor Pressure 4.09E-08 mm Hg 25 EST
Henry's Law Constant 7.24E-14 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 4.68E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.