CAS number: 55268-74-1
Molecular formula: C19H24N2O2
molecular weight: 312.41
Chemical structure:
Name of Product: | Praziquantel | |
Shelf Life: | 2 years | |
Specification: | EP8.0 | |
Test Items | Specification | Results of Analysis |
Description | White or almost white crystalline powder | Almost white crystalline powder |
Identification (IR) | The IR spectrum of the sample corresponds to the IR spectrum of the RS | Complies |
Ientification (HPLC) | The retention time of the major peak from the sample solution corresponds to that of the standard solution | Complies |
Loss on drying | ≤0.5% | 0.04% |
Sulphated ash | ≤0.1% | 0.05% |
Heavy metals | ≤20ppm | Complies |
Related substances | Impurity A≤0.2% | 0.08% |
Impurity B≤0.2% | 0.04% | |
Any individual unspecified impurity≤0.1% | 0.07% | |
Total impurities ≤0.5% | 0.2% | |
Assay (on the anhydrous basis) | 97.5-102.0% | 100.1% |
Residual solvents | Methylene chloride ≤600ppm | <25ppm |
Acetone ≤5000ppm | 270ppm |