Mianserin impurity 37 CAS CATO-C4X-136937
| CAS No. | CATO-C4X-136937 |
| Molecular Formula | C19H21NO3 |
| Molecular Weight | 311.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Mianserin impurity 37 (C19H21NO3) contains a steroid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Mianserin impurity 37 (CAS CATO-C4X-136937), a pharmacopoeial impurity reference standard (molecular formula C19H21NO3, MW 311.37 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C19H21NO3 |
| Molecular Weight | 311.37 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Mianserin Standards
- Mianserin impurity 20 (CAS CATO-C4X-136920)
- Mianserin Impurity 113 (CAS CATO-C4X-1369113)
- Mianserin Impurity 115 (CAS 764598-05-2)
- Mianserin impurity 33 (CAS CATO-C4X-136933)
- Mianserin impurity 42 (CAS CATO-C4X-136942)
- Mianserin Impurity 106 (CAS CATO-C4X-1369106)
- Mianserin Impurity 123 (CAS CATO-C4X-1369123)
- Mianserin impurity 40 (CAS CATO-C4X-136940)
Recommended Standards
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