Wikipedia:  

L-Isoleucine

Isoleucine; Isoleucina [Spanish]; Acetic acid, amino-sec-butyl-; 2-Amino-3-methylpentanoic acid; (S-(R*,R*))-2-Amino-3-methylpentanoic acid; (2S,3S)-alpha-Amino-beta-methyl-n-valeric acid; Isoleucinum [Latin]; Pentanoic acid, 2-amino-3-methyl-, (S-(R*,R))-; erythro-L-Isoleucine; 2S,3S-Isoleucine; (2S,3S)-alpha-Amino-beta-merthyl-n-valeric acid
Molecular Formula
C6 H13 N O2
Natural Isotopic Abundance Mass
131.1729200000
Mono-Isotopic Molecular Masses
C12N14:   131.094628667
C13N14:   137.114757693
C12N15:   132.09166356
C13N15:   138.1117925867
L-Isoleucine image
L-Isoleucine
InCHi String:
InChI=1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1

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


IUPAC
(2S,3S)-2-amino-3-methyl-pentanoic acid



PubChem Substance (SID):   85164889   149247   3697
PubChem Compound (CID):   6306
KEGG: Compound ID   C00407
CAS Registry IDs:   7004-09-3   73-32-5
PDB Chemical Component   ILE   ILE_LFOH   ILE_LFZW
Miscellaneous Databases and IDs:   CHEBI 17191   NSC 46708   CCRIS 5229   EINECS 200-798-2

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.