Tulobuterol Impurity N4 CAS 117538-45-1
| CAS No. | 117538-45-1 |
| Molecular Formula | C8H8BrClO |
| Molecular Weight | 235.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 235.51 g/mol gives Tulobuterol Impurity N4 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Tulobuterol Impurity N4 (CAS 117538-45-1, C8H8BrClO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Tulobuterol Impurity N4 (C8H8BrClO) is characterized by a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
CATO manufactures Tulobuterol Impurity N4 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
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 | 97%+ |
| 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 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/Br-containing |
Related Tulobuterol Standards
- Tulobuterol Impurity 23 (CAS CATO-C4X-213423)
- Tulobuterol Impurity 5 (CAS 6314-52-9)
- 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)
Recommended Standards
- 1,2-Dichloro-4-(3-chlorobut-3-en-1-yl)benzene (CAS 951893-00-8)
- 5-Chloro-2-methoxybenzyl Bromide (CAS 58735-58-3)
- 1,3-Dichloro-2-(3-chlorobut-3-en-1-yl)benzene (CAS 951892-88-9)
- 5-Bromo-1-chloro-2-methoxy-3-methylbenzene (CAS 91506-05-7)
- Finerenone Impurity 213 (CAS CATO-C4X-2880213)
- Melatonin impurity 16 (CAS 203442-76-6)
- Atorvastatin Impurity 111 (CAS 175453-07-3)
- Nona-1,8-dien-5-ol (CAS 94427-72-2)
- 5,6-Dimethyl-10-phenyl-2,9-diazatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3,5,7-tetraen-12-one; ethanol (CAS 1823183-78-3)
- 4-Phenylphenanthrene (CAS 4325-78-4)
- (3-Bromo-2,6-dimethoxypyridin-4-yl)bis(3,5-dimethylphenyl)phosphine oxide (CAS 442686-32-0)
- (S)-tert-Butyl 2-((1R,2R)-1-hydroxy-3-methoxy-2-methyl-3-oxopropyl)pyrrolidine-1-carboxylate (CAS 164456-57-9)
- 5,7-Dibromo-1H-benzo[d][1,3]oxazine-2,4-dione (CAS 861818-00-0)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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