Dopamine Impurity 50 CAS CATO-C4X-190850
| CAS No. | CATO-C4X-190850 |
| Molecular Formula | C16H19NO4 |
| Molecular Weight | N/A |
| 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 Dopamine Impurity 50 (CAS CATO-C4X-190850), a pharmacopoeial impurity reference standard (molecular formula C16H19NO4HBr, MW 370.24 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Dopamine Impurity 50 (C16H19NO4HBr) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C16H19NO4 HBr |
| Molecular Weight | 370.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Dopamine Standards
Recommended Standards
- Rosuvastatin Impurity 96 (CAS 521974-00-5)
- Levonorgestrel Impurity 32 (CAS CATO-C4X-167732)
- Mirabegron Impurity 5 (CAS CATO-C4X-10325)
- 2-(Trifluoromethyl)-1H-benzo[d]imidazol-7-ol (CAS 327-16-2)
- (6-(Trifluoromethyl)pyridin-3-yl)boronic acid (CAS 868662-36-6)
- tert-Butyl N-{[(3,5-dimethylphenyl)carbamoyl]methyl}carbamate (CAS 946613-17-8)
- methyl 4-bromo-2-methoxy-5-nitrobenzoate (CAS 98590-43-3)
- 3-AMINOPIPERIDINE (CAS 54012-73-6)
- 2-([1,1-Biphenyl]-2-yloxy)-5-chloroaniline (CAS 946727-75-9)
- C-Peptide (human) (CAS 33017-11-7)
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