Picosulfate Impurity 17 CAS 109810-81-3
| CAS No. | 109810-81-3 |
| Molecular Formula | C18H15NO2 |
| Molecular Weight | 277.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Picosulfate Impurity 17 (CAS 109810-81-3), a pharmacopoeial impurity reference standard (molecular formula C18H15NO2, MW 277.32 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H15NO2, Picosulfate Impurity 17 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 277.32 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C18H15NO2 |
| Molecular Weight | 277.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
Related Picosulfate Standards
- Picosulfate Impurity 12 (CAS 105745-58-2)
- Picosulfate Impurity 15 (CAS 16985-07-2)
- Picosulfate Impurity 16 (CAS 13004-51-8)
- Sodium Picosulfate EP Impurity B (CAS 603-41-8)
- Picosulfate impurity 20 (CAS 181423-88-1)
- Picosulfate Impurity 4 (CAS CATO-C4X-12374)
- Sodium Picosulfate Impurity 9 (CAS 2379877-99-1)
- Picosulfate impurity 21 (CAS CATO-C4X-123721)
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- Atrasentan Impurity 106 (CAS 1059052-53-7)
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