Paclitaxel EP Impurity P CAS 173101-56-9
| CAS No. | 173101-56-9 |
| Molecular Formula | C48H53NO14 |
| Molecular Weight | 867.93 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Paclitaxel EP Impurity P meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Paclitaxel EP Impurity P (CAS 173101-56-9) is a certified pharmaceutical impurity reference standard with the molecular formula C48H53NO14 and a molecular weight of 867.93 g/mol.
Paclitaxel EP Impurity P (C48H53NO14) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C48H53NO14 |
| Molecular Weight | 867.93 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 23.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 1 |
Related Paclitaxel Standards
- Paclitaxel EP Impurity M (CAS 932042-85-8)
- Paclitaxel EP Impurity F (CAS 153083-53-5)
- Paclitaxel 13C [~1.0Mg/Ml](P) (In Solution) (CAS 379688-61-6)
- Paclitaxel-d5 (CAS 1129540-33-5)
- Paclitaxel-d5 (Benzoyloxy) (CAS 1261254-56-1)
- Paclitaxel EP Impurity O (CAS 219783-77-4)
- Paclitaxel Photodegradant (CAS 146139-03-9)
- Paclitaxel EP Impurity E (CAS 105454-04-4)
Recommended Standards
- 2'-O-Methyl Paclitaxel (CAS 156413-67-1)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
- Ceritinib Impurity 9 (CAS CATO-C4X-10489)
- Dynorphin A (1-7) (CAS 77101-32-7)
- Semaglutide impurity 57 (CAS 2773558-06-6)
- Terbutaline Impurity 58 (CAS CATO-C4X-118358)
- Varenicline Impurity 3 (CAS 230615-51-7)
- Methyl 4,5,6,7-tetrahydro-[1,2,3]triazolo[1,5-a]pyrazine-3-carboxylate (CAS 1211538-23-6)
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- Ethyl 1-amino-2-vinylcyclopropanecarboxylate (CAS 787548-29-2)
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- n1-[(3-chloro-4-fluorophenyl)methyl]pyrrolidine-1,3-dicarboxamide (CAS 1311638-84-2)
- 8-chloroimidazo[1,2-a]pyridine-2-carbaldehyde (CAS 885276-03-9)
- Glucagon (1-29) (CAS 16941-32-5)
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