Nitrotetrazolium Blue is a chemical compound widely used in biochemistry and molecular biology experiments. There are several synonyms for this compound, including NBT, NTB, and NitroBT. These terms are commonly used to refer to the same substance, which is a redox dye that is commonly used to detect the presence of enzymes like dehydrogenases in biological samples. NBT is typically insoluble in water, but it can be reduced to NBT-formazan through enzymatic reactions. This reaction produces a characteristic blue dye, which makes it a valuable tool in various assays. Overall, these synonyms are used interchangeably in scientific literature and discussions to represent Nitrotetrazolium Blue.