Dopamine Impurity 73 CAS CATO-C4X-190873
| CAS No. | CATO-C4X-190873 |
| Molecular Formula | C10H12N2O6 |
| Molecular Weight | 256.21 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.
Dopamine Impurity 73 (CAS CATO-C4X-190873) is a certified pharmaceutical impurity reference standard with the molecular formula C10H12N2O6 and a molecular weight of 256.21 g/mol.
The molecular framework of Dopamine Impurity 73 (C10H12N2O6) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C10H12N2O6 |
| Molecular Weight | 256.21 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Dopamine Standards
- Dopamine Impurity 48 (CAS 500337-08-6)
- Dopamine Impurity 23 (CAS 1158-27-6)
- Dopamine Impurity 103 (CAS CATO-C4X-1908103)
- Dopamine Impurity 104 (CAS CATO-C4X-1908104)
- Dopamine Impurity 14 (CAS 217657-34-6)
- Dopamine 3-O-Sulfate (CAS 51317-41-0)
- Dopamine 4-O-Sulfate (CAS 38339-02-5)
- Dopamine Impurity (CAS 83442-18-6)
Recommended Standards
- 1-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde (CAS 4494-26-2)
- 2,7-Dinitrofluorene (CAS 5405-53-8)
- 66080-23-7 4,4,5,5-Tetramethyl-2-[(phenylsulfanyl)methyl]-1,3,2-dioxaborolane DTXSID40405494 (CAS 66080-23-7)
- Purpurin (CAS 81-54-9)
- Crisaborole Impurity 26 (CAS CATO-C4X-202126)
- Morinidazole Impurity 17 (CAS CATO-C4X-219617)
- Febuxostat Impurity 72 (CAS 923942-36-3)
- 2-Amino-N-butylacetamide hydrochloride (CAS 207128-84-5)
- Metoclopramide Impurity 127 (CAS CATO-C4X-1415127)
- 3-(4-Bromophenyl)-1-(p-tolyl)-1H-pyrazole-4-carbaldehyde (CAS 618098-44-5)
- Methyl 7-bromo-3-hydroxy-2-naphthoate (CAS 10155-36-9)
- Traumatin (CAS 65410-38-0)
- (3-Bromo-4-chloro-5-(trifluoromethyl)phenyl)methanol (CAS 2384801-56-1)
- ([13C6]Leu14)-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802078-39-2)
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