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CAS Number: 123-51-3
Molecular Formula: C5H12O
Molecular Weight: 88.15
IUPAC Name: 3-methyl-1-butanol
Other Names: 3-Methyl-1-butanol, Isopentyl alcohol, Isopentanol, Isobutylcarbinol
Isoamyl alcohol (also known as isopentyl alcohol) is a clear, colorless alcohol with the formula (CH3)2CHCH2CH2OH. It is one of several isomers of amyl alcohol. It is a main ingredient in the production of banana oil, an ester found in nature and also produced as a flavouring in industry. It's also the main ingredient of Kovac's reagent, used for the bacterial diagnostic indole test.
It is also used as an antifoaming agent in the Chloroform: Isomyl Alcohol reagent.
Isoamyl alcohol is used in a Phenol-chloroform extraction mixed with the chloroform to further inhibit RNase activity and prevent solubility of RNAs with long tracts of poly-adenine. It is one of the components of the aroma of Tuber melanosporum, the black truffle. It has been identified as a chemical in the pheromone used by hornets to attract other members of the hive to attack.