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Indole-3-acetic acid

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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Further Information

Names

IUPAC name2-(1-indol-3-yl)acetic acid

Systematic IUPAC name2-(1-indol-3-yl)ethanoic acid

Other names

Indole-3-acetic acid,
indolylacetic acid,
1-Indole-3-acetic acid,
indoleacetic acid,
heteroauxin,
IAA

Identifiers

CAS Number: 87-51-4

JSmol: Interactive image

ChEBI: CHEBI:16411

ChEMBL: ChEMBL82411

ChemSpider: 780

DrugBank: DB07950

ECHA InfoCard: 100.001.590

KEGG: C00954

PubChem: 802

Properties

Chemical formula: C10H9NO2

Molar mass: 175.19 g·mol

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(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).

Infobox references