Sulfobutyl ether Betacyclodextrin sodium is one of the ramification of beta-cyclodextrin, it is used in the medicine as carrier, and it can strongerly improve the solubilty of drugs, It has more strong water solubility than any other cyclodextrins.
Detailed specification:
Appearance: white or offwhite powder
Degree of substituton: 4.0-8.0
Assay : 98.0% min
PH (16% water solution): 5.0-8.0
Residue on ignition:  23.0% max
Heavy metal: 0.002% max
Residue Betadex: 0.5 max