Metaraminol Impurity 20 CAS 1602857-90-8
| CAS No. | 1602857-90-8 |
| Molecular Formula | C9H11NO4 |
| Molecular Weight | 197.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Metaraminol Impurity 20 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.
Metaraminol Impurity 20 (CAS 1602857-90-8) is a certified pharmaceutical impurity reference standard with the molecular formula C9H11NO4 and a molecular weight of 197.19 g/mol.
Metaraminol Impurity 20 (C9H11NO4) contains an amino-acid-derived structure, 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).
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 | C9H11NO4 |
| Molecular Weight | 197.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 1 |
Related Metaraminol Standards
- Metaraminol Impurity 21 (CAS 1602857-94-2)
- Metaraminol Impurity 22 (CAS CATO-C4X-225222)
- Metaraminol Impurity 89 (CAS 1602857-88-4)
- Metaraminol Impurity 91 (CAS CATO-C4X-225291)
- Metaraminol Impurity 80 (CAS CATO-C4X-225280)
- Metaraminol Impurity 79 (CAS CATO-C4X-225279)
- Metaraminol Impurity 88 (CAS 27913-13-9)
- Metaraminol impurity 104 (CAS 1379208-51-1)
Recommended Standards
- Dopamine Impurity 70 (CAS 528594-30-1)
- Dopamine Impurity 30 (CAS 339186-39-9)
- Pyridoxine impurity 91 (CAS CATO-C4X-187791)
- Pranoprofen Impurity 53 (CAS 6537-46-8)
- Ursodeoxycholic acid impurity 27 (CAS 77059-13-3)
- Aripiprazole Impurity 21 (CAS 2250243-33-3)
- Febuxostat Impurity 61 (CAS 2418591-42-9)
- N,N-dibenzylacetamide (CAS 10479-30-8)
- N-(2-Fluoro-6-nitrophenyl)piperidin-4-amine hydrochloride (CAS 1233954-80-7)
- Sodium 3-methylpyridine-2-sulfinate (CAS 2097773-43-6)
- 3-Hexyl-4-(2-hydroxytridecyl)-2-oxetanone (CAS 104872-07-3)
- 4-bromo-2-(bromomethyl)-1-(trifluoromethoxy)benzene (CAS 685126-87-8)
- 6-[(hydroxyimino)methyl]-2-oxo-1,2-dihydropyridine-3-carbonitrile (CAS 81450-61-5)
- Des-Gly29,30-Tirzepatide (CAS CATO-CPTD788944)
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