Molecular Formula: Various representations exist, such as C20H21N6NaO9S (molecular weight 544.47) or C20H18N6Na2O9S (molecular weight 564.44), which may be due to slight differences in salt forms or preparation processes.
EINECS Number: 265-288-4
II. Physical Properties
Appearance: White or pale yellow-white powder or lump, odorless.
Solubility: Easily soluble in water and methanol, slightly soluble in ethanol, practically insoluble in acetone, ether, chloroform, ethyl acetate, and other non-polar solvents.
Melting Point: Above 156°C (decomposition).
Specific Rotation: D22 -45° (water).
III. Chemical Stability
*Unstable in solution, especially in DMSO or methanol. *Should be stored in a sealed container, in a cool, dry place, away from heat, and preferably at 2~8°C.
