Tretinoin Tretinoin supplier high purity tretinoin
Item |
Specification |
Test result |
Description |
Yellow crystalline powder |
Yellow crystalline powder |
Identification |
The IR absorption spectrum should correspond with reference spectrum |
Correspond with reference spectrum |
|
Should exhibits maximum absorption at 352nm |
Exhibits maximum absorption at 352nm |
Loss on drying |
Not more than 0.5% |
0.27% |
Residue on ignition |
Not more than 0.1% |
0.02% |
Heavy metals |
Not more than 0.002% |
Less than 0.002% |
Limit of Isotretinoin |
Not more than 5.0% |
0.15% |
Assay |
98.0%~102.0 %( Calculated on the dried basis) |
100.8% |
Conclusion |
It complies with all the requirements of USP 35 |
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