During hypoxia in rats, levels of α-tocopherylquinon have been found to rise. It is reported to downregulate the respiratory activity of mitochondria.

4-Azido-L-phenylalanine (p-Azido-L-phenylalanine) is an amino acid derivative that acts as a photoaffinity marker and can be used to detect localized protein environments.

3,5-Dibromo-4-methoxybenzoic acid was isolated from the Malagasy sponge Amphimedon sp.