Ropinirole EP Impurity C HCl CAS 145570-92-9
| CAS No. | 145570-92-9 |
| Molecular Formula | C19H28N2O |
| Molecular Weight | N/A |
| 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 Ropinirole EP Impurity C HCl (CAS 145570-92-9), a pharmacopoeial impurity reference standard (molecular formula C19H28N2OHCl, MW 336.90 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ropinirole EP Impurity C HCl (C19H28N2OHCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 336.90 g/mol, it falls into the moderately-high-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), Ropinirole EP Impurity C HCl 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 | C19H28N2O HCl |
| Molecular Weight | 336.90 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Ropinirole Standards
- Ropinirole Impurity 10 (CAS 101566-00-1)
- Ropinirole Impurity 24 (CAS 1027600-42-5)
- Ropinirole Impurity 27 (CAS 1027600-42-5 (free base))
- Ropinirole EP Impurity A (CAS 102842-51-3)
- Ropinirole EP Impurity D (CAS 106916-16-9)
- Ropinirole Impurity 3 HCl (CAS 1076199-41-1)
- Ropinirole-D14 (CAS 1132746-05-4)
- Ropinirole Impurity 4 (CAS 120427-93-2)
Recommended Standards
- Gadobutrol impurity 164 (CAS CATO-C4X-2120164)
- Relebactam Impurity 33 (CAS CATO-C4X-214433)
- Cinepazide Impurity 3 (CAS CATO-C4X-18153)
- IN 1130 (CAS 868612-83-3)
- 4,4-Dimethoxybutanoic Acid Methyl Ester (CAS 4220-66-0)
- Ethyl 1-(3-methoxyphenyl)-1H-1,2,4-triazole-3-carboxylate (CAS 1245645-50-4)
- 1-Methyl-6-oxo-1,6-dihydropyridine-3-carbonitrile (CAS 768-45-6)
- 6-Fluoro-2-methoxy-3-methylbenzaldehyde (CAS 1780083-66-0)
- 2-(5-Bromo-2,3-dioxo-2,3-dihydro-1h-indol-1-yl)-n,n-dimethylacetamide (CAS 1021023-54-0)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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