USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
97240-79-4 topiramate
topiramate in stock
high quality topiramate
topiramate powder
testing specification |
usp 32 |
item tested |
standard |
appearance |
white to off-white powder. freely soluble in dichloromethane |
identification |
infrared absorption |
the retention time of the major peak in the chromatogram of the assay preparation corresponds to that in the chromatogram of the standard preparation , as obtained in the assay |
|
specific rotation |
between -28.6° and -35.0°,measured at 20° |
water |
not more than 0.5% |
residue on ignition |
not more than 0.1% |
heavy metals |
not more than 10ppm |
related compounds by hplc (test 1) |
fructose not more than 0.3% compound a not more than 0.3% other individual impurity not more than 0.1% total impurities not more than 0.5% |
limit of sulfamate and sulfate |
sulfamate ion not more than 0.10%; sulfate ion not more than 0.10%. |
assay |
topiramate contains not less than 98.0% and not more than the equivalent of 102.0% of c12h21no8s, calculated with reference to the anhydrous basis. |