Rotigotine Impurity 4 CAS CATO-C4X-19274
| CAS No. | CATO-C4X-19274 |
| Molecular Formula | C19H24BrNOS |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Rotigotine Impurity 4 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.
Rotigotine Impurity 4 (CAS CATO-C4X-19274) is a certified pharmaceutical impurity reference standard with the molecular formula C19H24BrNOSHCl and a molecular weight of 430.83 g/mol.
Rotigotine Impurity 4 (C19H24BrNOSHCl) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine/bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C19H24BrNOS HCl |
| Molecular Weight | 430.83 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Rotigotine Standards
- Rotigotine Impurity 11 (CAS 101403-24-1)
- Rotigotine impurity 23 (CAS 101470-23-9)
- Rotigotine EP Impurity B Hydrochloride (CAS 101470-23-9（free base）)
- Rotigotine Racemate HCl (CAS 102120-99-0)
- Rotigotine Impurity 40 (CAS 102121-00-6)
- Rotigotine EP Impurity A (CAS 112835-48-0)
- Rotigotine EP Impurity A HCl (CAS 112835-48-0（free base）)
- Rotigotine EP Impurity H (CAS 1148154-91-9)
Recommended Standards
- Clevidipine Impurity 28 (CAS CATO-C4X-101528)
- CAS CATO-C4X-32406 (CAS CATO-C4X-32406)
- Zopiclone EP Impurity C (CAS 148891-53-6)
- Methyl 4-(2-((3-(4-methoxyphenyl)-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)acetamido)benzoate (CAS 477329-17-2)
- 3-(1,3-Diphenyl-1H-pyrazol-4-yl)propanoic acid (CAS 108446-77-1)
- Teprenone impurity 50 (CAS CATO-C4X-208150)
- 4-Methoxy-1-(phenylsulfonyl)-1H-pyrrolo[3,2-c]pyridine (CAS 1227270-22-5)
- 2,3-Difluoro-4''-Heptyl-4-Pentyl-1,1':4',1''-Terphenyl (CAS 121218-85-7)
- 2-Chloro-4-(1-naphthyl)-6-phenyl-1,3,5-triazine (CAS 1472062-95-5)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
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