Ramelteon Impurity 35 CAS CATO-C4X-262235
| CAS No. | CATO-C4X-262235 |
| Molecular Formula | C32H40N2O4 |
| Molecular Weight | 516.67 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.
Ramelteon Impurity 35 (CAS CATO-C4X-262235) is a certified pharmaceutical impurity reference standard with the molecular formula C32H40N2O4 and a molecular weight of 516.67 g/mol.
Ramelteon Impurity 35 (C32H40N2O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
As a certified reference material (CRM), Ramelteon Impurity 35 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 | C32H40N2O4 |
| Molecular Weight | 516.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Ramelteon Standards
- Ramelteon Impurity 22 (CAS 880152-63-6)
- Ramelteon Impurity 61 (CAS CATO-C4X-262261)
- Ramelteon RC 8 (CAS 1246820-32-5)
- Ramelteon Impurity 4 (CAS CATO-C4X-26224)
- Ramelteon Impurity 19 (CAS CATO-C4X-262219)
- Ramelteon Impurity 29 (CAS CATO-C4X-262229)
- Ramelteon Impurity 8 (CAS CATO-C4X-26228)
- Ramelteon Dimer Impurity (CAS 1365920-38-2)
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- Fasudil Impurity N1 (CAS 88551-85-3)
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- Perfluorophenyl isonicotinate (CAS 360574-34-1)
- 5-(3-methylphenyl)-1,3,4-oxadiazol-2-ol (CAS 119933-33-4)
- n-Methyl-2-(4-(methylthio)phenyl)ethan-1-amine (CAS 55653-25-3)
- Liraglutide Impurity 20 TFA Salt (CAS CATO-C4X-199220)
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