Dicloxacillin Related Compound D CAS 3919-76-4
| CAS No. | 3919-76-4 |
| Molecular Formula | C11H7Cl2NO3 |
| Molecular Weight | 272.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Dicloxacillin Related Compound D (CAS 3919-76-4, C11H7Cl2NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C11H7Cl2NO3, Dicloxacillin Related Compound D contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 272.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C11H7Cl2NO3 |
| Molecular Weight | 272.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dicloxacillin Standards
- Dicloxacillin Degradation Impurity (DCMICAA) (CAS 883225-99-8)
- Dicloxacillin EP Impurity B (CAS 1642576-88-2)
- Dicloxacillin (CAS 3116-76-5)
- Dicloxacillin Impurity 4 (CAS CATO-C4X-16154)
- Dicloxacillin Impurity 7 (CAS CATO-C4X-16157)
- Dicloxacillin Impurity C34 (CAS 42947-69-3)
- Dicloxacillin EP Impurity A (CAS CATO-C4X-16151)
- Dicloxacillin Impurity 8 (CAS CATO-C4X-16158)
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