Wikipedia:  

L-Leucine

L-Norvaline, 4-methyl-; Leucina [Latin,Spanish]; (S)-2-Amino-4-methylvaleric acid; L-(-)-2-Amino-4-methylpentanoic acid; Leu; (S)-Leucine; 2-Amino-4-methylvaleric acid; (2S)-alpha-Leucine; 2-Amino-4-methylpentanoic acid (L); (2S)-alpha-2-Amino-4-methylvaleric acid; Leucine
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-Leucine image
L-Leucine
InCHi String:
InChI=1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1

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


IUPAC
(2S)-2-amino-4-methyl-pentanoic acid



PubChem Substance (SID):   85164890   148996   3423
PubChem Compound (CID):   6106
KEGG: Compound ID   C00123
CAS Registry IDs:   61-90-5   7005-03-0
PDB Chemical Component   LEU   LEU_LFOH   LEU_LFZW
Miscellaneous Databases and IDs:   CHEBI 15603   FEMA No. 3297   NSC 46709   EINECS 200-522-0

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.