Irinotecan EP Impurity L CAS 1255644-71-3
| CAS No. | 1255644-71-3 |
| Molecular Formula | C33H38N4O6 |
| Molecular Weight | 586.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Irinotecan EP Impurity L (CAS 1255644-71-3), a pharmacopoeial impurity reference standard (molecular formula C33H38N4O6, MW 586.68 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C33H38N4O6, Irinotecan EP Impurity L contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 586.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C33H38N4O6 |
| Molecular Weight | 586.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 4 |
Related Irinotecan Standards
- Irinotecan (CAS 97682-44-5)
- Irinotecan EP Impurity H (CAS 1608617-71-5)
- Irinotecan EP Impurity M (CAS 185336-12-3)
- Irinotecan Impurity 63 (CAS CATO-C4X-166763)
- Irinotecan Impurity 51 (CAS 2944102-98-9)
- Irinotecan Impurity 38 (CAS 143490-54-4)
- Irinotecan EP Impurity C (CAS 947687-02-7)
- Irinotecan EP Impurity A (CAS 103816-16-6)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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