Halobetasol Impurity 5 CAS 79861-38-4
| CAS No. | 79861-38-4 |
| Molecular Formula | - |
| Molecular Weight | 493.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Halobetasol Impurity 5 is supplied as a fully characterized reference material; its structural identity, assigned purity, and stability data are documented in the batch-specific Certificate of Analysis (COA).
As a process- or degradation-related impurity, Halobetasol Impurity 5 (CAS 79861-38-4, N/A) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Halobetasol Impurity 5 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 | C26H31AF2O7 |
| Molecular Weight | 493.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | F-containing |
Related Halobetasol Standards
- Halobetasol Impurity 12 (CAS CATO-C4X-331412)
- Halobetasol Propionate Impurity D (CAS 66852-61-7)
- Halobetasol Propionate (CAS 66852-54-8)
- Halobetasol Impurity 4 (CAS CATO-C4X-33144)
- Halobetasol Impurity 3 (CAS 181527-42-4)
- Halobetasol Impurity 10 (CAS CATO-C4X-331410)
- Halobetasol Impurity 1 (CAS 84509-92-2)
- Halobetasol Impurity 11 (CAS CATO-C4X-331411)
Recommended Standards
- Silodosin Impurity 1 (CAS 175870-21-0)
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- Nicardipine Impurity 58 (CAS CATO-C4X-171058)
- 9-[(4-Carboxy-2,6-dimethylphenoxy)carbonyl]-10-(3-sulfopropyl)acridinium Inner Salt (>90%) (CAS 946423-58-1)
- Buspirone Impurity 40 (CAS CATO-C4X-125840)
- Avibactam impurity 93 (CAS CATO-C4X-134893)
- Cefazolin Impurity 36 (CAS CATO-C4X-157736)
- 2',4'-Dihydroxylchalcone (CAS 1776-30-3)
- N6-Methyl-1H-purine-6,8-diamine (CAS 374706-53-3)
- 5-(Benzyloxy)-8-(oxiran-2-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 1822826-25-4)
- 1-Ethyl-3-methylimidazolium bis(pentafluoroethylsulfonyl)imide (CAS 216299-76-2)
- Iomeprol Impurity 23 (CAS CATO-C4X-182023)
- N1-(but-3-en-1-yl)-N2,N2-dimethylethane-1,2-diamine (CAS 1339341-40-0)
- Tirzepatide Impurity 14 (CAS CATO-C4X-324014)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com