Oxymetazoline EP Impurity D CAS 55699-12-2
| CAS No. | 55699-12-2 |
| Molecular Formula | C14H20O3 |
| Molecular Weight | 236.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Oxymetazoline EP Impurity D (CAS 55699-12-2), a pharmacopoeial impurity reference standard (molecular formula C14H20O3, MW 236.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C14H20O3, Oxymetazoline EP Impurity D contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 236.31 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 | C14H20O3 |
| Molecular Weight | 236.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Oxymetazoline Standards
- Oxymetazoline EP Impurity C (CAS 55699-13-3)
- Oxymetazoline Impurity N1 (CAS 23500-79-0)
- Oxymetazoline Impurity 19 (CAS 1895424-66-4)
- Oxymetazoline EP Impurity E (CAS 55699-10-0)
- Oxymetazoline Impurity 11 (CAS CATO-C4X-172311)
- Oxymetazoline (CAS 1491-59-4)
- Oxymetazoline-d4 (imidazoline-d4) (CAS 1262053-60-0)
- Oxymetazoline Impurity 13 (CAS CATO-C4X-172313)
Recommended Standards
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- Lacosamide Impurity 54 (CAS CATO-C4X-183054)
- Cilastatin EP Impurity F (CAS CATO-C4X-19604)
- Ornidazole Impurity 43 (CAS CATO-C4X-133143)
- Fosfomycin Impurity 76 (CAS CATO-C4X-131676)
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Why CATO?
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