How many Carbon atoms are present in a Pyruvate molecule?

A pyruvate molecule contains 3 carbon atoms. Pyruvate (CH3-CO-COO−) is the end product of glycolysis, the metabolic pathway in which one glucose molecule (6 carbons) is broken down into two pyruvate molecules (3 carbons each). Its molecular formula is C3H3O3−. Pyruvate plays a central role in cellular metabolism: under aerobic conditions, it is converted to acetyl-CoA and enters the Krebs cycle; under anaerobic conditions, it is converted to lactate (in animals) or ethanol (in yeast). The 3-carbon structure of pyruvate makes it a key intermediate in carbohydrate, fat, and amino acid metabolism.