Wikipedia:  

L-Threonine

Threonine; 2-Amino-3-hydroxybutanoic acid, (R-(R*,S*))-; Butanoic acid, 2-amino-3-hydroxy-, (R-(R*,S*))-; Threoninum [Latin]; L-Threonine; Threonin; Treonina [Spanish]; (S)-Threonine; 2-Amino-3-hydroxybutyric acid; Threonine, L-
Molecular Formula
C4 H9 N O3
Natural Isotopic Abundance Mass
119.1191600000
Mono-Isotopic Molecular Masses
C12N14:   119.05824316
C13N14:   123.071662512
C12N15:   120.055278054
C13N15:   124.0686974048
L-Threonine image
L-Threonine
InCHi String:
InChI=1S/C4H9NO3/c1-2(6)3(5)4(7)8/h2-3,6H,5H2,1H3,(H,7,8)/t2-,3+/m1/s1

isomeric SMILES:
C[C@H]([C@@H](C(=O)O)N)O
canonical SMILES:
CC(C(C(=O)O)N)O


IUPAC
(2S,3R)-2-amino-3-hydroxy-butanoic acid



PubChem Substance (SID):   85164897   149226   3488
PubChem Compound (CID):   6288
KEGG: Compound ID   C00188
CAS Registry IDs:   13095-55-1   36676-50-3   72-19-5
PDB Chemical Component   THR   THR_LFOH   THR_LFZW
Miscellaneous Databases and IDs:   CHEBI 16857   NSC 16589   EINECS 200-774-1

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.