Ramosetron Impurity 9 CAS 171967-72-9
| CAS No. | 171967-72-9 |
| Molecular Formula | C17H15N3O2 |
| Molecular Weight | 293.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Ramosetron Impurity 9 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 293.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Ramosetron Impurity 9 (CAS 171967-72-9, C17H15N3O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Ramosetron Impurity 9 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 | C17H15N3O2 |
| Molecular Weight | 293.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 3 |
Related Ramosetron Standards
- Ramosetron Impurity 8 (CAS CATO-C4X-11828)
- Ramosetron Impurity 14 (CAS 171967-71-8)
- Ramosetron Impurity 6 (CAS CATO-C4X-11826)
- Ramosetron Impurity 7 (CAS CATO-C4X-11827)
- Ramosetron Impurity 24 (CAS CATO-C4X-118224)
- Ramosetron Impurity 21 (CAS CATO-C4X-118221)
- Ramosetron Impurity 11 (CAS 1352491-75-8)
- Ramosetron (CAS 132036-88-5)
Recommended Standards
- Picosulfate Impurity 4 (CAS CATO-C4X-12374)
- Methotrexate Impurity 68 (CAS CATO-C4X-115468)
- Sodium Picosulfate Impurity 9 (CAS 2379877-99-1)
- Methotrexate Impurity 66 (CAS CATO-C4X-115466)
- Ezetimibe Impurity 92 (CAS 2469633-86-9)
- Arotinolol impurity 28 (CAS CATO-C4X-185428)
- Clindamycin Impurity 21 (CAS CATO-C4X-134121)
- 6-Chloro-3-nitro-2-styrylimidazo[1,2-a]pyridine (CAS 62195-20-4)
- 5-Chloro-1-methyl-3-(trifluoromethyl)-1h-pyrazole (CAS 372075-75-7)
- (S)-2-Amino-N-((2-bromopyridin-4-yl)methyl)-3-methylbutanamide (CAS 1354016-79-7)
- 2,4,6-Trichlorobenzene-1,3,5-triol (CAS 56961-23-0)
- 4-(4-Chloro-1h-pyrazol-1-yl)piperidine (CAS 1251305-58-4)
- 9-((2R,3S,4R,5R)-3-Fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1H-purine-6(9H)-thione (CAS 109304-05-4)
- Neuropeptide Y, porcine (CAS 82785-45-3)
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