Sertaconazole nitrate EP Impurity B CAS 17512-61-7
| CAS No. | 17512-61-7 |
| Molecular Formula | C9H6BrClS |
| Molecular Weight | 261.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Sertaconazole nitrate EP Impurity B (CAS 17512-61-7) is a certified pharmaceutical impurity reference standard with the molecular formula C9H6BrClS and a molecular weight of 261.57 g/mol.
Structurally, Sertaconazole nitrate EP Impurity B (C9H6BrClS) contains sulfur-containing functionality, chlorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 261.57 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C9H6BrClS |
| Molecular Weight | 261.57 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Sertaconazole Standards
Recommended Standards
- 7-(Bromomethyl)-3-chlorobenzo[b]thiophene (CAS 88415-30-9)
- 2,4,4＇-Trichlorobiphenyl-2＇,3＇,5＇,6＇-d4 (CAS 1219799-32-2)
- 5-Bromo-3-(chloromethyl)benzo[b]thiophene (CAS 852180-53-1)
- 3-Difluoromethoxy-2-chloromethyl-6-(trifluoromethyl)pyridine (CAS 1227583-61-0)
- Ursodeoxycholic acid impurity 31 (CAS 566-17-6)
- Abiraterone Impurity 44 (CAS CATO-C4X-107044)
- Creatine impurity 19 (CAS CATO-C4X-120919)
- 1-(tert-Butyldimethylsilyl)-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid (CAS 754214-41-0)
- 7-Bromo-1-ethyl-2-methyl-1h-imidazo[4,5-c]pyridine (CAS 1044771-90-5)
- 4-Cyclodecen-1-one (CAS 26749-90-6)
- 1-(Fluoromethyl)-2-oxabicyclo[2.1.1]hexane-4-carboxylic acid (CAS 2253631-32-0)
- 4-Hydroxy-2-naphthoic Acid (CAS 1573-91-7)
- 2-Chloro-3-(methylsulfanyl)benzoic acid (CAS 1805648-85-4)
- Semaglutide（sodium salt） (CAS CATO-C4X-222619)
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