6-Hydroxyindole is a reactant for asymmetrical synthesis of notoamide J as a potential biosynthetic precursor of prenylated indole alkaloids and for preparation of indoleoxyacetic acid derivatives as peroxisome proliferator-activated receptor agonists.

Coppersensor 1 is a boron dipyrromethene-based fluorescent sensor for selective and sensitive detection of copper(I) ions (Cu + ) in biological samples. Coppersensor 1 can be imaged using any type of fluorescence microscope, including epifluorescence, confocal and multiphoton.

Selenocysteine is recognized as the 21st amino acid in ribosome-mediated protein synthesis and its specific incorporation is directed by the UGA codon.