Dopamine Impurity 44 CAS CATO-C4X-190844
| CAS No. | CATO-C4X-190844 |
| Molecular Formula | C18H21NO3 |
| Molecular Weight | 299.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dopamine Impurity 44 (CAS CATO-C4X-190844), a pharmacopoeial impurity reference standard (molecular formula C18H21NO3, MW 299.36 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H21NO3, Dopamine Impurity 44 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 299.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), Dopamine Impurity 44 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 | C18H21NO3 |
| Molecular Weight | 299.36 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Dopamine Standards
- Dopamine Impurity 37 (CAS CATO-C4X-190837)
- Dopamine Impurity 41 (CAS CATO-C4X-190841)
- Dopamine Impurity 80 (CAS CATO-C4X-190880)
- Dopamine Impurity 61 (CAS CATO-C4X-190861)
- Dopamine Impurity 40 (CAS CATO-C4X-190840)
- Dopamine Impurity 97 (CAS CATO-C4X-190897)
- Dopamine Impurity 109 (CAS CATO-C4X-1908109)
- Dopamine Impurity 114 (CAS CATO-C4X-1908114)
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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