Ramelteon Impurity 31 CAS 1204581-50-9
| CAS No. | 1204581-50-9 |
| Molecular Formula | C16H21NO3 |
| Molecular Weight | 275.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ramelteon Impurity 31 (C16H21NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Ramelteon Impurity 31 (CAS 1204581-50-9) is a certified pharmaceutical impurity reference standard with the molecular formula C16H21NO3 and a molecular weight of 275.34 g/mol.
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), Ramelteon Impurity 31 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 | C16H21NO3 |
| Molecular Weight | 275.34 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Ramelteon Standards
- Ramelteon Metabolite M-II (CAS 896736-21-3)
- Ramelteon Impurity 36 (CAS CATO-C4X-262236)
- Ramelteon Impurity 38 (CAS 1260675-80-6)
- Ramelteon Impurity 62 (CAS 809097-20-8)
- Ramelteon Impurity 15 (CAS 880152-61-4)
- Ramelteon Impurity 33 (CAS 2517684-01-2)
- Ramelteon Impurity 59 (CAS CATO-C4X-262259)
- Ramelteon Impurity 28 (CAS CATO-C4X-262228)
Recommended Standards
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- Orforglipron impurity 80 (CAS CATO-C4X-323480)
- Ozanimod Impurity 30 (CAS CATO-C4X-290230)
- Cyclophosphamide Impurity 43 (CAS CATO-C4X-230643)
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- 1-(Tert-butyl) 4-ethyl 4-(iodomethyl)piperidine-1,4-dicarboxylate (CAS 213013-98-0)
- Adenine Impurity 16 (CAS 78548-84-2)
- 1-Benzyl-1h-imidazo[4,5-c]pyridine-2-thiol (CAS 34477-54-8)
- (R)-1-(4-chloro-2-methoxyphenyl)ethan-1-amine (CAS 1270206-17-1)
- 2-Amino-1,5-anhydro-2,4-dideoxy-D-threo-Pentitol (CAS 1240390-32-2)
- (D-Trp32)-Neuropeptide Y (porcine) trifluoroacetate salt (CAS 153549-78-1)
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