83-48-7 Stigmasterol Stigmasterol Price
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High quality 83-48-7 Stigmasterol
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Stigmasterol is one of a group of phytosterol. Stigmasterol is an unsaturated plant sterol occuring in plant fats or oils of soybean,calabar bean and rape seed,and in a number of medicinal herbs. Research has indicated that stigmasterol mar be useful in prevention of certain cancers, including ovarian, prostate, breast and colon cancers. Studies have also indicated that a diet high in phytosterols may inhibit the absorption of cholesterol and lower serum cholesterol levels by compting for intestinal absorption.
Items |
Specifications |
Results |
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Appearance |
white powder |
|
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Identification |
Infared Absorption |
Complies |
||
The retention time of the major peak in the chromatogram of the Assay prepration corresponds to that in the chromatogram of the standard preparation, as obtained in the assay |
complies |
|||
Specific rotation |
Between -28.6°and -35.0°, measured at 20° |
-32.8° |
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Water |
not more than 0.5% |
0.12% |
||
residue on ignition |
not more than 0.2% |
0.11% |
||
Heavy metals |
not more than 0.001% |
complies |
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related compounds by HPLC(Test1) |
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% |
Fructose: 0.03% Compound A: 0.04% Total impurities: 0.07% |
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Particle size |
90% less than 350 microns |
complies |
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Limit of sulfamate and sulfate |
Sulfamate ion not more than 0.10% Sulfate ion not more than 0.10% |
complies |
||
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 |
99.80% |
||
Conclustion |
The material complies with respect to USP32 |
CAS NO:30123-17-2
CAS NO:171596-29-5
CAS NO:171596-29-5
CAS NO:171596-29-5
CAS NO:171596-29-5
CAS NO:171596-29-5
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