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Indole-3-butyric acid

Indole-3-butyric acid

IUPAC name	1H-Indole-3-butanoic acid
Other names	indole-3-butyric acid 3-indolebutyric acid indolebutyric acid IBA
Identifiers
CAS number	133-32-4
RTECS number	NL5250000
SMILES	OC(CCCC2=CNC1=CC=CC=C12)=O
Properties
Molecular formula	C₁₂H₁₃NO₂
Molar mass	203.24 g/mol
Appearance	white to light yellow crystals
Melting point	125 °C
Boiling point	decomposes
Structure
Crystal structure	cubic
Hazards
R-phrases	R25 R36/37/38
S-phrases	S26 S28 S36/37/39 S38 S45
Related Compounds
Related	auxin indole-3-acetic acid
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Indole-3-butyric acid (1H-Indole-3-butanoic acid, IBA) is a white to light-yellow crystalline solid, with the molecular formula C₁₂H₁₃NO₂. It melts at 125 °C in atmospheric pressure and decomposes before boiling.

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As a Plant Hormone

IBA is a plant hormone in the auxin family and is an ingredient in many commercial plant rooting horticultural products.

For use as such, it should be dissolved in about 75% (or purer) alcohol (as IBA does not dissolve in water), until a concentration from between 10,000 ppm to 50,000 ppm is achieved - this solution should then be diluted to the required concentration using distilled water. The solution should be kept in a cool, dark place for best results.

This compound had been thought to be strictly synthetic; however, it was reported that the compounds was isolated from leaves and seeds of maize and other species.^[1]