Indole-3-acetic acid

Indole-3-acetic acid
Names
	Preferred IUPAC name (1H-Indol-3-yl)acetic acid
	Other names Indole-3-acetic acid,; indolylacetic acid,; 1H-Indole-3-acetic acid,; indoleacetic acid,; heteroauxin,; IAA
Identifiers
CAS Number	87-51-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:16411 ;
ChEMBL	ChEMBL82411 ;
ChemSpider	780 ;
DrugBank	DB07950 ;
ECHA InfoCard	100.001.590
KEGG	C00954 ;
PubChem CID	802;
UNII	6U1S09C61L ;
CompTox Dashboard (EPA)	DTXSID5020738 ;
	InChI InChI=1S/C10H9NO2/c12-10(13)5-7-6-11-9-4-2-1-3-8(7)9/h1-4,6,11H,5H2,(H,12,13) Key: SEOVTRFCIGRIMH-UHFFFAOYSA-N ; InChI=1/C10H9NO2/c12-10(13)5-7-6-11-9-4-2-1-3-8(7)9/h1-4,6,11H,5H2,(H,12,13) Key: SEOVTRFCIGRIMH-UHFFFAOYAT;
	SMILES O=C(O)Cc1c[nH]c2ccccc12;
Properties
Chemical formula	C10H9NO2
Molar mass	175.187 g·mol−1
Appearance	White solid
Melting point	168 to 170 °C (334 to 338 °F; 441 to 443 K)
Solubility in water	insoluble in water. Soluble in ethanol to 50mg/ml
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Indole-3-acetic acid (IAA, 3-IAA) is the most common naturally occurring plant hormone of the auxin class. It is the best known of the auxins, and has been the subject of extensive studies by plant physiologists. IAA is a derivative of indole, containing a carboxymethyl substituent. It is a colorless solid that is soluble in polar organic solvents.

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