USP32

類白色結晶性粉末

Appearance White or almost white crystalline powder
Identification
-By UV(25ug/ml in water)
-Sodium The UV absorption spectrum of the sample solution exhibits maxima and minima at the same wavelengths as that of the standard solution.
It responds to the tests for Sodium
Specific optical rotation +124? ~+134?
Crystallinity Should be crystalline
PH(250mg/ml in water) 4.5-7.0
Loss on drying 1.5% max
Related compounds(by HPLC) Individual: 1.0% max
Total impurities: 3.0% max
Residual solvent Acetone: 0.5% max
Bacterial endotoxins(EU/mg) 0.13% max
Sterility Meets the requirement
Assay(by HPLC)
Contains C16H16N2O6S2, calculated on dry base) 850ug/mg min