Norepinephrine Impurity 20 CAS 67896-55-3
| CAS No. | 67896-55-3 |
| Molecular Formula | C8H9NO3 |
| Molecular Weight | 167.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Norepinephrine Impurity 20 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Norepinephrine Impurity 20 (CAS 67896-55-3) is a certified pharmaceutical impurity reference standard with the molecular formula C8H9NO3 and a molecular weight of 167.16 g/mol.
Based on its molecular formula C8H9NO3, Norepinephrine Impurity 20 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 167.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H9NO3 |
| Molecular Weight | 167.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| 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.) | 1976 |
| Nitrogen Atoms | 1 |
Related Norepinephrine Standards
- Norepinephrine Impurity 27 (CAS 14309-96-7)
- Norepinephrine Impurity 127 (CAS 94593-04-1)
- Norepinephrine Impurity 54 (CAS CATO-C4X-151454)
- Norepinephrine Impurity 57 (CAS 29477-54-1)
- Norepinephrine Impurity 58 (CAS 408328-15-4)
- Norepinephrine impurity 147 (CAS CATO-C4X-1514147)
- Norepinephrine Impurity 15 (CAS 29477-55-2)
- Norepinephrine Impurity 95 (CAS CATO-C4X-151495)
Recommended Standards
- Noradrenalone EP Impurity B (CAS 499-61-6)
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- Venetoclax Impurity 140 (CAS CATO-C4X-2495140)
- Imatinib Impurity 87 (CAS 571187-02-5)
- Cefdinir Impurity 84 (CAS CATO-C4X-121084)
- (S)-2-(6-bromo-2-chloro-3-fluorophenyl)pyrrolidine (CAS 1344458-03-2)
- Methyl 4,4-difluoropyrrolidine-3-carboxylate hydrochloride (CAS 1638764-88-1)
- 3-(Trifluoromethyl)-5H-cyclopenta[c]pyridin-7(6H)-one (CAS 2734923-98-7)
- N-Cyclopentyl-4,5,6,7-tetrahydro-1H-pyrazolo-[4,3-c]pyridine-3-carboxamide hydrochloride (CAS 1220028-72-7)
- Iguratimod Impurity 113 HCl (CAS CATO-C4X-1826113)
- Glycine methyl ester hydrochloride (CAS 5680-79-5)
- Tirzepatide Impurity 36 (CAS CATO-C4X-324036)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com