Norepinephrine Impurity 36 CAS 121-28-8
| CAS No. | 121-28-8 |
| Molecular Formula | C11H15NO3 |
| Molecular Weight | 209.24 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.
CATO supplies Norepinephrine Impurity 36 (CAS 121-28-8), a pharmacopoeial impurity reference standard (molecular formula C11H15NO3, MW 209.24 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Norepinephrine Impurity 36 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 209.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures Norepinephrine Impurity 36 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.
Physical & Chemical Properties
| Molecular Formula | C11H15NO3 |
| Molecular Weight | 209.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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.) | 1957 |
| Nitrogen Atoms | 1 |
Related Norepinephrine Standards
- Norepinephrine Impurity 155 (CAS CATO-C4X-1514155)
- Norepinephrine Impurity 81 (CAS 779288-87-8)
- Norepinephrine Impurity 91 (CAS 7760-00-1)
- Norepinephrine Impurity 100 (CAS CATO-C4X-1514100)
- Norepinephrine Impurity 65 (CAS CATO-C4X-151465)
- Norepinephrine Impurity 23 (CAS 14771-02-9)
- Norepinephrine Impurity 25 (CAS 17345-68-5)
- Norepinephrine Impurity 26 (CAS CATO-C4X-151426)
Recommended Standards
- Phenylephrine Impurity 89 (CAS CATO-C4X-146789)
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- Losartan Impurity 20 (CAS 154709-19-0)
- Papaverine Impurity 43 (CAS CATO-C4X-206743)
- Isavuconazole Impurity 20 (CAS 2170932-49-5)
- Rocuronium impurity 65 (CAS CATO-C4X-124265)
- 2-(3-Bromo-6-cyano-2-nitrophenyl)acetic acid (CAS 1807045-30-2)
- 2-(Ethyl((1-methylpyrrolidin-2-yl)methyl)amino)acetic acid (CAS 1353954-66-1)
- 4-hydroxy-1, 2-benzoquinone (CAS 6527-61-6)
- Methyl 4-octylbenzoate (CAS 54256-51-8)
- Methyl Dehydroabietate (CAS 1235-74-1)
- 2-Chloro-N4-isobutylquinoline-3,4-diamine (CAS 133860-76-1)
- Semaglutide Impurity 192 (CAS CATO-C4X-2226192)
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