Ramelteon Impurity N13 CAS 882434-87-9
| CAS No. | 882434-87-9 |
| Molecular Formula | C16H19NO2 |
| Molecular Weight | 257.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a process- or degradation-related impurity, Ramelteon Impurity N13 (CAS 882434-87-9, C16H19NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C16H19NO2, Ramelteon Impurity N13 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.33 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 | C16H19NO2 |
| Molecular Weight | 257.33 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Ramelteon Standards
- Ramelteon Impurity 23 (CAS 196597-30-5)
- Ramelteon Impurity 30 (CAS CATO-C4X-262230)
- Ramelteon impurity 46 (CAS 1365920-11-1)
- Ramelteon Impurity 5 (CAS 880152-62-5)
- Ramelteon Impurity 63 (CAS CATO-C4X-262263)
- Ramelteon Impurity 64 (CAS 1252018-55-5)
- Ramelteon Impurity 65 (CAS 2819252-94-1)
- Ramelteon (CAS 196597-26-9)
Recommended Standards
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- Febuxostat Impurity 97 (CAS CATO-C4X-116297)
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- (SP-5-32)-Carbonyl[[(1R,1''R)-3,3''-[(1R,2R)-1,2-cyclohexanediylbis[(nitrilo-κN)methylidyne]]bis[2'-(2,6-difluorophenyl)[1,1'-binaphthalen]-2-olato-κO]](2-)]ruthenium (CAS 1445086-78-1)
- 2-(tert-Butoxy)-5-(trifluoromethyl)phenol (CAS 1243404-12-7)
- Acetyl-Exenatide trifluoroacetate salt (CAS 305815-28-5)
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