Thiamine Pyrophosphate (TPP) is a coenzyme found in living cells that is essential for metabolism. TPP acts as a cofactor for several enzymatic reactions, including those that generate energy from carbohydrates. There are several synonyms for TPP, including thiamine diphosphate, cocarboxylase, thiamine pyrophosphoric acid, and thiamine PP. These variations refer to the same molecule and are used interchangeably in literature related to biochemistry, nutrition, and medicine. Understanding the synonyms for TPP is essential for those studying the coenzyme and working within industries that use it, such as the food and pharmaceutical industries.