Creatine phosphate is a high-energy phosphate reservoir in vertebrate and some invertebrate muscle and is used in creatin kinase diagnostic tests. Creatine kinase catalyzes the transfer of a phosphate group from the creatine phosphate substrate to ADP. Subsequent formation of ATP is measured through the use of two coupled reactions catalyzed by hexokinase and glucose-6-phosphate dehydrogenase (G6PDH) which results in the production of reduced b-nicotinamide adenine dinucleotide (NADH) from b-nicotinamide dinucleotide (NAD). This change in absorbance is directly proportional to the activity of creatine kinase in the sample. 

Product Specifications
Creatine phosphate, disodium salt tetrahydrate
Phosphocreatine disodium salt

Formula: C₄H₈N₃O₅PNa₂ • 4 H₂O

MW: 327.14 g/mol

Storage/Handling: Store at 4°C. Protect from light.

PubChem Chemical ID: 24802058