Indole-3-acetic acid
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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.[1] IAA is a derivative of indole, containing a carboxymethyl substituent. It is a colorless solid that is soluble in polar organic solvents.
Quick Facts Names, Identifiers ...
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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 | |
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ECHA InfoCard | 100.001.590 |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
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) |
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).
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