Levodopa EP Impurity C CAS 15402-76-3
| CAS No. | 15402-76-3 |
| Molecular Formula | C10H13NO4 |
| Molecular Weight | 211.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 211.21 g/mol gives Levodopa EP Impurity C distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Levodopa EP Impurity C (CAS 15402-76-3, C10H13NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Levodopa EP Impurity C (C10H13NO4) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C10H13NO4 |
| Molecular Weight | 211.21 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Levodopa Standards
- Levodopa EP Impurity C (CAS 7636-26-2)
- Levodopa EP Impurity C (S-Isomer) (CAS 300-48-1)
- Levodopa Impurity 8 (CAS 64192-68-3)
- Rac-Levodopa EP Impurity A (CAS 21373-30-8)
- Levodopa EP Impurity A (CAS 27244-64-0)
- Levodopa EP Impurity C-d3 (S-isomer) (L-3-O-Methyldopa-d3) (CAS 586954-09-8)
- Levodopa Impurity 23 (CAS 75290-51-6)
- Levodopa Impurity 22 (CAS 28900-64-3)
Recommended Standards
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- Carfilzomib Impurity 57 (CAS CATO-C4X-102257)
- Camptothecin impurity 19 (CAS CATO-C4X-157119)
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- 6-(Indolin-1-yl)-2-methylnicotinaldehyde (CAS 1355219-62-3)
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- 2-Chloro-5-(4-(methylsulfonyl)phenyl)-N-(piperidin-4-ylmethyl)pyridin-4-amine (CAS 2208654-76-4)
- D,L-Carnitine-d (CAS 119766-67-5)
- N-Benzyl-4-hydroxy-3-oxobutanamide (CAS 1417179-40-8)
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