Wikipedia:  

3,4-Dihydroxy-L-phenylalanine

L-3-Hydroxytyrosine; Dopar; L-beta-(3,4-Dihydroxyphenyl)alanine; Levodopa; (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid; 3-(3,4-Dihydroxyphenyl)-L-alanine; Dihydroxy-L-phenylalanine; L-DOPA; 3-Hydroxy-L-tyrosine; L-Dopa; 3,4-DIHYDROXYPHENYLALANINE
Molecular Formula
C9 H11 N O4
Natural Isotopic Abundance Mass
197.18794
Mono-Isotopic Molecular Masses
C12N14:   197.0688078467
C13N14:   206.0990013869
C12N15:   198.0658427399
C13N15:   207.0960362801
3,4-Dihydroxy-L-phenylalanine image
3,4-Dihydroxy-L-phenylalanine
InCHi String:
InChI=1S/C9H11NO4/c10-6(9(13)14)3-5-1-2-7(11)8(12)4-5/h1-2,4,6,11-12H,3,10H2,(H,13,14)/t6-/m0/s1

canonical SMILES:
C1=CC(=C(C=C1CC(C(=O)O)N)O)O
isomeric SMILES:
C1=CC(=C(C=C1C[C@@H](C(=O)O)N)O)O


PUBCHEM iupac NAME: PUBCHEM iupac OPENEYE NAME: PUBCHEM iupac CAS NAME: PUBCHEM iupac SYSTEMATIC NAME
(2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid

PUBCHEM iupac TRADITIONAL NAME
(2S)-2-amino-3-(3,4-dihydroxyphenyl)propionic acid



PubChem Substance (SID):   85165122   11112155   26746620
PubChem Compound (CID):   6047
KEGG: Compound ID   D00059
CAS Registry IDs:   59-92-7
PDB Chemical Component   DAH   TY3
Miscellaneous Databases and IDs:   Thomson Pharma 00036711   ChEBI CHEBI:15765   ChemSpider 5824   NCGC NCGC00016270-01   Sigma-Aldrich D9628_SIGMA

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.