Tulobuterol Impurity 23 CAS CATO-C4X-213423
| CAS No. | CATO-C4X-213423 |
| Molecular Formula | C8H8BrClO |
| Molecular Weight | 235.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Tulobuterol Impurity 23 (CAS CATO-C4X-213423), a pharmacopoeial impurity reference standard (molecular formula C8H8BrClO, MW 235.51 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Tulobuterol Impurity 23 (C8H8BrClO) contains a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 235.51 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Tulobuterol Impurity 23 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 | C8H8BrClO |
| Molecular Weight | 235.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl/Br-containing |
Related Tulobuterol Standards
- Tulobuterol Impurity 5 (CAS 6314-52-9)
- Tulobuterol Impurity N4 (CAS 117538-45-1)
- Tulobuterol Impurity N5 (CAS 72702-57-9)
- Tulobuterol Impurity N9 (CAS 41011-01-2)
- Tulobuterol Impurity N1 (CAS 5000-66-8)
- Tulobuterol Impurity N2 (CAS 536-38-9)
- Tulobuterol Impurity 18 (CAS CATO-C4X-213418)
- Tulobuterol Impurity 13 (CAS CATO-C4X-213413)
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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