Disodium 5?Guanylate (GMP)

Name: Disodium 5?Guanylate (GMP) 
CAS No.: 5550-12-9 
Chemical Formula: C10H12N5Na2O8P 
Specification: export standard 
Packing: In 20kg drums 
Functional use: Flavor Enhancer 
Detailed Specifications

Items    Specifications 
Appearance: White crystals or crystalline powder, easily soluble in water, slightly soluble in ethanol, difficult soluble in ether 
Identification: Max. absorbance of the solution is shown at wavelength of 250? nm 
State of solution: Clear and colorless 
Other related compounds of amino acid Conforms 
Other related compounds of nuclear acid: Not detectable 
Assay: 97.0% min 
Loss on drying: 25% max 
Heavy metals(Pb): 0.002% max 
Arsenic: 0.0002% max 
Ammonium: Conforms 
Spectral ratios:
250/260nm
280/260nm 
0.94 ?1.04
0.63 - 0.71 
PH: 7.0 ?8.5