1-(2-hydroxyethyl)thymine (2,4(1H,3H)-Pyrimidinedione, 1-(2-hydroxyethyl)-5-methyl-) is a marine derived natural products found in Zoanthus sp.

Rhodopsin Epitope Tag is a 9-amino acid peptide representing C terminus of bovine rhodopsin widely used as an epitope tag. A number of anti-rhodopsin antibodies can recognize this epitope.

Tetrachlorocatechol is a metabolite of pentachlorophenol. Tetrachlorocatechol is one of the most toxic chlorinated catechol produced by the chlorobleaching of pulp and frequently found in the kraft pulp mill effluents.