Wikipedia:  

serotonin

Serotonin; Thrombocytin; 3-(2-Aminoethyl)-1H-indol-5-ol; 5-HT; Ds substance; Antemovis; 5-Hta; 5-Hydroxy-3-(beta-aminoethyl)indole; Antemoqua; Indol-5-ol, 3-(2-aminoethyl)-; 3-(2-Aminoethyl)indol-5-ol
Molecular Formula
C10 H12 N2 O
Natural Isotopic Abundance Mass
176.21508
Mono-Isotopic Molecular Masses
C12N14:   176.0949630177
C13N14:   186.1285113957
C12N15:   178.0890328041
C13N15:   188.1225811821
serotonin image
serotonin
InCHi String:
InChI=1S/C10H12N2O/c11-4-3-7-6-12-10-2-1-8(13)5-9(7)10/h1-2,5-6,12-13H,3-4,11H2

canonical and isomeric SMILES:
C1=CC2=C(C=C1O)C(=CN2)CCN


PUBCHEM iupac NAME: PUBCHEM iupac TRADITIONAL NAME: PUBCHEM iupac OPENEYE NAME: PUBCHEM iupac CAS NAME
3-(2-aminoethyl)-1H-indol-5-ol

PUBCHEM iupac SYSTEMATIC NAME
3-(2-azanylethyl)-1H-indol-5-ol



PubChem Substance (SID):   111677885   148566   4041
PubChem Compound (CID):   5202
KEGG: Compound ID   C00780
CAS Registry IDs:   50-67-9
PDB Chemical Component   SRO
Miscellaneous Databases and IDs:   CAS 50-67-9   MMCD cq_00526   ChemIDplus 000050679   EINECS 200-058-9   NIAID 166243   Beilstein Handbook Reference 5-22-12-00016   NCGC NCGC00142449-02   NIST 470768363

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.