Empirical Formula (Hill Notation): C10H14N5Na2O13P3 · xH2O, Molecular Weight: 551.14 (anhydrous basis), Grade I, ≥99%, from microbial, Synonym: ATP disodium salt. Adenosine 5′-triphosphate (ATP) is a central component of energy storage and metabolism in vivo. ATP is use in many cellular processes, respiration, biosynthetic reactions, motility, and cell division.