Tulobuterol Impurity N9 CAS 41011-01-2
| CAS No. | 41011-01-2 |
| Molecular Formula | C8H6BrClO |
| Molecular Weight | 233.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Tulobuterol Impurity N9.
CATO supplies Tulobuterol Impurity N9 (CAS 41011-01-2), a pharmacopoeial impurity reference standard (molecular formula C8H6BrClO, MW 233.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system, Tulobuterol Impurity N9 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 233.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), Tulobuterol Impurity N9 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 | C8H6BrClO |
| Molecular Weight | 233.49 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl/Br-containing |
Related Tulobuterol Standards
- Tulobuterol Impurity N1 (CAS 5000-66-8)
- Tulobuterol Impurity N2 (CAS 536-38-9)
- Tulobuterol Impurity 23 (CAS CATO-C4X-213423)
- Tulobuterol Impurity 5 (CAS 6314-52-9)
- Tulobuterol Impurity N4 (CAS 117538-45-1)
- Tulobuterol Impurity N5 (CAS 72702-57-9)
- Tulobuterol Impurity 10 (CAS 69240-94-4)
- Tulobuterol Impurity 12 (CAS 14185-28-5)
Recommended Standards
- 7-Bromo-6-chloro-2,3-dihydro-1H-pyrrolo[3,2-c]pyridine (CAS 80862-18-6)
- 5-Chloro-2-(bromomethyl)benzaldehyde (CAS 886041-44-7)
- 5-Bromo-4-chloro-6-cyclopropylpyrimidine (CAS 27192-21-8)
- 1-Bromo-3-(3-chloropropyl)benzene (CAS 1057673-67-2)
- Letermovir Impurity 100 (CAS CATO-C4X-2915100)
- Baloxavir Marboxil Impurity 160 (CAS CATO-C4X-2108160)
- Etrasimod Impurity 67 (CAS CATO-C4X-321467)
- 3-Bromo-4-(tert-butyl)-5-cyclopropoxypyridine (CAS 1243285-74-6)
- methyl 4-bromothieno[2,3-c]pyridine-2-carboxylate (CAS 145325-40-2)
- [4-(1H-Pyrazol-1-yl)benzyl]aminedihydrochloride (CAS 1185303-30-3)
- MPEG6-CH2CH2COOH (CAS 874208-91-0)
- 1-(6-Methylpyridine-2-carbonyl)piperidine-2-carboxylic acid (CAS 1101831-30-4)
- Ethyl 3-(5-bromofuran-2-yl)-2-cyanoacrylate (CAS 85460-04-4)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com