Sodium fluoroborate (sodium tetrafluoroborate) is an inorganic compound with the formula NaBF4. It is used in the sand casting of aluminum, electrochemical processes, and as fluorinating agent. It is also used as an additive in chrome, nickel and cadmium plating baths. Sodium tetrafluoroborate may be used as a catalyst for the synthesis of bis(indolyl)methanes via electrophilic substitution reaction of indoles with aldehydes and ketones. It may also be used as a source of tetrafluoroborate anoins during the synthesis of ionic liquids like 1-butyl-3-methylimidazolium tetrafluoroborate[4] and trihexyl(tetradecyl)phosphonium tetrafluoroborate.

Tetrofosmin is a phosphor-organic compound, belonging to the group of diphosphines. Tetrofosmin is used as a component of a Technetium (99mTc) tetrofosmin complex. Due to the relatively short half-life of Tc99m (6 hours), just before the administration, the solution of tetrofosmin should be reconstituted with Tc99m pertechnetate to form a complex of Tc99m Tetrofosmin. When administered intravenously, Tc99m Tetrofosmin shows rapid myocardial uptake and its distribution follows a linear relationship with coronary blood flow. It is taken up by the mitochondria of myocardial cells by passive diffusion and appears to accumulate in viable myocardial tissue. Tc99m Tetrofosmin is used as a diagnostic agent used to assess areas of reversible myocardial ischemia in the presence or absence of infracted myocardium and is also used to assess ventricular function.