Adenosine triphosphate

Adenosine triphosphate

Other names : adenosine 5'-(tetrahydrogen triphosphate)
Chemical data :
 Items                              Properties
 Molecular formula        C10H16N5O13P3
 Molar mass                   507.18 g mol−1
 Acidity (pKa)                  6.5
 Assay(HPLC)               98% 
 Package                       1kg; 5kg; 10kg; 25kg
 Store                              Preserve hermetically in cool place 
About Adenosine triphosphate : 
Adenosine-5'-triphosphate (ATP) is a multifunctional nucleotide, and plays an important role in cell biology as a coenzyme that is the "molecular unit of currency" of intracellular energy transfer.
In this role, ATP transports chemical energy within cells for metabolism. It is produced as an energy source during the processes of photosynthesis and cellular respiration and consumed by many enzymes and a multitude of cellular processes including biosynthetic reactions, motility and cell division.
ATP is made from adenosine diphosphate (ADP) or adenosine monophosphate (AMP), and its use in metabolism converts it back into these precursors. ATP is therefore continuously recycled in organisms, with the human body turning over its own weight in ATP each day.
Physical and chemical properties :
ATP consists of adenosine & mdash; composed of an adenine ring and a ribose sugar — and three phosphate groups (triphosphate). The phosphoryl groups, starting with the group closest to the ribose, are referred to as the alpha (α), beta (β), and gamma (γ) phosphates. ATP is highly soluble in water and is quite stable in solutions between pH 6.8–7.4, but is rapidly hydrolysed at extreme pH. Consequently, ATP is best stored as an anhydrous salt.
ATP is an unstable molecule in unbuffered water, which hydrolyses to ADP and phosphate. This is because the strength of the bonds between the phosphate residues in ATP are less than the strength of the "hydration" bonds between its products (ADP + phosphate), and water. Thus, if ATP and ADP are in chemical equilibrium in water, almost all of the ATP will eventually be converted to ADP. A system that is far from equilibrium contains potential energy, and is capable of doing work. Living cells maintain the ratio of ATP to ADP at a point ten orders of magnitude from equilibrium, with ATP concentrations a thousandfold higher than the concentration of ADP. This displacement from equilibrium means that the hydrolysis of ATP in the cell releases a great amount of energy.

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