Picosulfate Impurity 15 CAS 16985-07-2
| CAS No. | 16985-07-2 |
| 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.
As a process- or degradation-related impurity, Picosulfate Impurity 15 (CAS 16985-07-2, C18H15NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Picosulfate Impurity 15 (C18H15NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 277.32 g/mol, it falls into the medium-molecular-weight range. 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 | >95% |
| 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.) | 1961 |
| Nitrogen Atoms | 1 |
Related Picosulfate Standards
- Picosulfate Impurity 12 (CAS 105745-58-2)
- Picosulfate Impurity 16 (CAS 13004-51-8)
- Picosulfate Impurity 17 (CAS 109810-81-3)
- 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)
Recommended Standards
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- Bendamustine Impurity 36 (CAS CATO-C4X-127136)
- Venetoclax Impurity 109 (CAS CATO-C4X-2495109)
- Miconazole EP Impurity I HCl (CAS CATO-C4X-180210)
- Favipiravir Impurity 5 (CAS 356783-16-9)
- 4-((3-Oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)methyl)benzoic acid (CAS 857492-98-9)
- Ethyl 3-{[4-(2-fluorophenyl)piperazine-1-carbothioyl]amino}propanoate (CAS 1022235-03-5)
- 5-Bromo-8-chloroquinoline (CAS 927800-41-7)
- sodium 4,5-dimethyl-1H-imidazole-2-carboxylate (CAS 1989672-85-6)
- 5-(Piperidin-2-yl)-1H-indole (CAS 1270479-80-5)
- 8-Methylbenzo[b]naphtho[2,3-d]thiophene (CAS 24964-07-6)
- Glucagon Monohydrochloride (CAS 28270-04-4)
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