Beclometasone dipropionate EP Impurity S CAS 1709825-83-1
| CAS No. | 1709825-83-1 |
| Molecular Formula | C31H41ClO8 |
| Molecular Weight | 577.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Beclometasone dipropionate EP Impurity S (C31H41ClO8) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 577.11 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Beclometasone dipropionate EP Impurity S (CAS 1709825-83-1, C31H41ClO8) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
As a certified reference material (CRM), Beclometasone dipropionate EP Impurity S meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C31H41ClO8 |
| Molecular Weight | 577.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
Related Beclometasone Standards
- Beclometasone Dipropionate Monohydrate EP Impurity D (CAS 52092-14-5)
- Beclometasone Dipropionate Monohydrate EP Impurity E (CAS 887130-68-9)
- Beclometasone Dipropionate EP Impurity N (CAS 1204582-47-7)
- Beclometasone Dipropionate Monohydrate EP Impurity F (CAS 887130-69-0)
- Beclometasone Dipropionate Monohydrate EP Impurity O (CAS 14527-61-8)
- Beclometasone Dipropionate Monohydrate EP Impurity C (CAS CATO-C4X-14743)
- Beclometasone Dipropionate Monohydrate EP Impurity L (CAS 114371-33-4)
- Beclometasone Dipropionate EP Impurity M (CAS 3100114-15-3)
Recommended Standards
- 5-(Isobutylthio)-1,3,4-thiadiazol-2-amine (CAS 33313-07-4)
- 4-(4-Benzhydrylpiperazin-1-yl)-6-(((4-chlorobenzyl)thio)methyl)-2-phenylpyrimidine (CAS 338967-30-9)
- Dapagliflozin Impurity N33 (CAS 2040305-09-5)
- Methyl 3-(2,6-dichlorophenyl)-5-[(E)-2-[3-(2,6-dichlorophenyl)-4-hydroxy-[1,2]oxazolo[4,5-c]pyridin-7-yl]ethenyl]-1,2-oxazole-4-carboxylate (CAS 338773-07-2)
- Oseltamivir Impurity 57 (CAS CATO-C4X-172057)
- Metaraminol Impurity 78 (CAS 65133-68-8)
- Pinaverium impurity 27 (CAS CATO-C4X-246727)
- N2-Ethyl-1H-benzo[d]imidazole-1,2-diamine (CAS 171082-90-9)
- 4-(4,6-Dichloro-1,3,5-triazin-2-yl)-N,N-diphenylaniline (CAS 20354-36-3)
- 3-(Methylsulfanyl)-5,6-diphenyl-1,2,4-triazine (CAS 28735-33-3)
- 2-Thia-5-azabicyclo[2.2.1]heptane (CAS 19577-71-0)
- 4-Hydroxy-1-(2-hydroxyethyl)-2,2,6,6-tetramethylpiperidine (CAS 52722-86-8)
- Tadalafil Impurity 56 (CAS 406938-39-4)
- Des-Trp25-Tirzepatide (CAS CATO-CPTD788948)
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