Топирамат

Topiramate is a new drug of anticonvulsants. We supply it as the stnadard of USP32 with high quality and large quantity. Topiramate 1. CAS RN: 97240-79-4 2. Structural Formula: 3. Molecular formula & Molecular weight: C12H21NO8S 339.37 4. Appearance: It’s a white to off-white powder. Freely soluble in dichloromethane 5. Quality Standard: USP32, purity≥98.0% 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. 6. Usage:It’s a new drug of anticonvulsants. 7. Storage: It stored in sealed containers, cool and dry place, and away from light. 8. Packing: Paper bucket, 25kg/package. 9. HS CODE: 2932 9990.90