ATP (Adenosine-5 -triphosphate) known as in Chinese is a fundamental component for energy transfer in biological systems ATP and its sodium salts can be utilized in numerous molecular biology applications such as kinase reactions in vitro transcription ligation reactions and phosphorylation assays This product is a colorless transparent aqueous solution prepared from ATP trisodium salt with a purity 99% (by HPLC) concentration of 100 mM pH (25 ) 7 0 0 1 and free of DNase RNase and phosphatase contamination