Ramelteon Impurity 28 CAS CATO-C4X-262228
| CAS No. | CATO-C4X-262228 |
| Molecular Formula | C16H19NO3 |
| Molecular Weight | 273.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ramelteon Impurity 28 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
As a process- or degradation-related impurity, Ramelteon Impurity 28 (CAS CATO-C4X-262228, C16H19NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Ramelteon Impurity 28 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 273.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C16H19NO3 |
| Molecular Weight | 273.33 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Ramelteon Standards
- Ramelteon 6-Oxo Impurity (CAS 896736-22-4)
- Ramelteon Impurity 15 (CAS 880152-61-4)
- Ramelteon Impurity 33 (CAS 2517684-01-2)
- Ramelteon Impurity 59 (CAS CATO-C4X-262259)
- Ramelteon Metabolite M-II (CAS 896736-21-3)
- Ramelteon Impurity 31 (CAS 1204581-50-9)
- Ramelteon Impurity 36 (CAS CATO-C4X-262236)
- Ramelteon Impurity 38 (CAS 1260675-80-6)
Recommended Standards
- Upadacitinib Impurity 4 (CAS CATO-C4X-24054)
- Mavacamten (CAS 1642288-47-8)
- Bilastine Impurity 56 (CAS CATO-C4X-225356)
- Mavacamten Impurity 4 (CAS 1642288-94-5)
- Fluticasone Impurity 21 (CAS 397864-40-3)
- Ensifentrine impurity 14 (CAS CATO-C4X-335314)
- Minocycline Impurity 69 (CAS CATO-C4X-169969)
- 1000018-50-7 5-(Hexamethylenimin-1-yl)-2-nitrobenzoic acid 7041AC C13H16N2O4 (CAS 1000018-50-7)
- 3-(Trifluoromethyl)imidazo[1,5-a]pyridin-1-amine (CAS 1556269-08-9)
- 10-Methylundecanoic acid (CAS 2724-56-3)
- 3-(Hex-1-yn-1-yl)-3-hydroxy-2-phenylisoindolin-1-one (CAS 143647-60-3)
- 6-Fluoro-5-hydroxypicolinaldehyde (CAS 1211585-11-3)
- Paliperidone Impurity 34 (CAS CATO-C4X-1724134)
- Semaglutide Impurity 146 (CAS 2645421-68-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com