N-Nitroso Tolterodine EP Impurity E CAS 2680528-95-2
| CAS No. | 2680528-95-2 |
| Molecular Formula | C19H24N2O2 |
| Molecular Weight | 312.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including N-Nitroso Tolterodine EP Impurity E.
N-Nitroso Tolterodine EP Impurity E (CAS 2680528-95-2) is a certified pharmaceutical impurity reference standard with the molecular formula C19H24N2O2 and a molecular weight of 312.41 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, N-Nitroso Tolterodine EP Impurity E is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 312.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), N-Nitroso Tolterodine EP Impurity E 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.
Physical & Chemical Properties
| Molecular Formula | C19H24N2O2 |
| Molecular Weight | 312.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 2 |
Related N Standards
- N-Nitroso-pendimethalin (CAS 68897-50-7)
- N-Nitroso Bupropion USP Related Compound B (CAS CATO-C4X-120362)
- N-Nitroso Articaine (CAS CATO-C4X-191215)
- N-Nitroso Chlorphenamine (CAS CATO-C4X-118844)
- N-Nitroso Abacavir EP Impurity A (CAS CATO-C4X-152715)
- N-Nitroso Fentanyl EP Impurity D (CAS 1184873-14-0)
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- N-Nitroso Cetirizine EP Impurity A (CAS 2005-04-1)
Recommended Standards
- Cetirizine Impurity 36 (CAS CATO-C4X-158236)
- Peramivir Impurity 62 (CAS 229614-93-1)
- Netupitant Impurity 5 (CAS CATO-C4X-12235)
- Granisetron EP Impurity A (CAS 127472-42-8)
- Atogepant Impurity 70 (CAS CATO-C4X-328570)
- Piroxicam Impurity 23 Disodium Salt (CAS 88741-92-8 (free acid))
- Amlodipine Besylate Impurity C (CAS 721958-74-3)
- Meprophendiol (CAS 1087-06-5)
- Methyl 4-bromo-6-cyanobenzo[b]thiophene-2-carboxylate (CAS 753455-45-7)
- 6-Chloro-4-(3-methylbut-1-yn-1-yl)-4-(trifluoromethyl)-3,4-dihydroquinazolin-2(1H)-one (CAS 214287-63-5)
- 4-Bromo-N-(4-(tert-butyl)phenyl)benzamide (CAS 746613-29-6)
- 2-(phenothiazin-3-ylideneamino)benzene-1,4-disulfonic acid (CAS 178861-30-8)
- 1,7-Dihydroxy-3-methoxyacridin-9(10H)-one (CAS 612541-97-6)
- [His]1-Acetylated Semaglutide (CAS CATO-C4X-2226219)
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