Pentaerythritol Tetranitrate, or PETN for short, is a highly explosive and volatile substance used in the creation of explosives and in the medical field as a vasodilator. Synonyms for this chemical compound include Pentaerythritol Nitrate, Pentranitrate, and Erythrityl Tetranitrate. In addition, it is also commonly referred to as "explosive powder", "flash powder", and "detonating powder". PETN's explosive properties have made it a favored choice in the creation of various tools and weapons, and its medical applications have been used to treat conditions such as heart failure and angina. Due to its highly reactive nature, proper handling and storage of PETN is critical.