WST-1 is a cytotoxic, water-soluble tetrazolium salt that induces intracellular mitochondrial dehydrogenases to undergo NADH-dependent enzymatic reactions, releasing water-soluble methylbenzene products.

Mating Factor α (1-6) is a mating factor produced by α-mating type cells of Saccharomyces cerevisiae and an acts as an inhibitor of the initiation of DNA synthesis in the cells.

A purine and a reaction intermediate in the metabolism of adenosine and in the formation of nucleic acids by the salvage pathway.