5-Hydroxyindoleacetic acid

5-Hydroxyindoleacetic acid

Names
Preferred IUPAC name (5-Hydroxy-1H-indol-3-yl)acetic acid
Identifiers
CAS Number	54-16-0 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:27823 Y
ChEMBL	ChEMBL395915 Y
ChemSpider	1760 Y
ECHA InfoCard	100.000.179
KEGG	C05635 Y
MeSH	Hydroxyindoleacetic+Acid
PubChem CID	1826
UNII	YHC763JY1P Y
CompTox Dashboard (EPA)	DTXSID50861582
InChI InChI=1S/C10H9NO3/c12-7-1-2-9-8(4-7)6(5-11-9)3-10(13)14/h1-2,4-5,11-12H,3H2,(H,13,14) Y Key: DUUGKQCEGZLZNO-UHFFFAOYSA-N Y InChI=1/C10H9NO3/c12-7-1-2-9-8(4-7)6(5-11-9)3-10(13)14/h1-2,4-5,11-12H,3H2,(H,13,14) Key: DUUGKQCEGZLZNO-UHFFFAOYAY
SMILES c1cc2c(cc1O)c(c[nH]2)CC(=O)O
Properties
Chemical formula	C10H9NO3
Molar mass	191.186 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

5-Hydroxyindoleacetic acid (5-HIAA) is the main metabolite of serotonin. The metabolic intermediate 5-hydroxyindoleacetaldehyde (5-HIAL) is formed from serotonin by monoamine oxidase (MAO) and then 5-HIAA is formed from 5-HIAL via aldehyde dehydrogenase (ALDH). In chemical analysis of urine samples, 5-HIAA is used to determine serotonin levels in the body.