The term "SCN-" refers to the thiocyanate ion, which is a chemical species composed of one sulfur atom, one carbon atom, and one nitrogen atom. It is often represented as SCN⁻ and is known for its role in various chemical reactions and biological processes. Thiocyanate can be found in some foods and is produced in the human body as a byproduct of certain metabolic processes. Thiocyanate is important in the field of biochemistry, particularly in relation to the thyroid gland. It can inhibit the uptake of iodine, which is essential for the production of thyroid hormones. Additionally, SCN- is used in analytical chemistry and can serve as a ligand in coordination compounds.