<unk>  <unk> , 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.<unk>  is a derivative of indole, containing a carboxymethyl substituent. It is a colorless solid that is soluble in polar organic solvents.
Indole-3-acetic acid
Phenylacetic acid
Choline
3-Indolepropionic acid
Beta-Hydroxy beta-methylbutyric acid
Doisynolic acid
Gamma-Amino-beta-hydroxybutyric acid
Arachidonic acid