L-Dihydroorotic acid also known as (S)-45-dihydroorotate or dihydro-L-orotate belongs to the class of organic compounds known as alpha amino acids and derivatives.

Humic acid is a compound formed by microbial decomposition of plant and animal remains and is widely found in mountains, rivers and lakes.Humic acid enhances the degradation of pyrene by Mycobacterium smegmatis NJS-1.

Brilliant Yellow (Direct Yellow 4) is a potent and selective VGLUT inhibitor, a dye that is photodegradable.