Ropinirole EP Impurity F CAS 139122-19-3
| CAS No. | 139122-19-3 |
| Molecular Formula | C10H11NO2 |
| Molecular Weight | 177.20 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 177.20 g/mol gives Ropinirole EP Impurity F distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ropinirole EP Impurity F (CAS 139122-19-3) is a certified pharmaceutical impurity reference standard with the molecular formula C10H11NO2 and a molecular weight of 177.20 g/mol.
Structurally, Ropinirole EP Impurity F (C10H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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 177.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C10H11NO2 |
| Molecular Weight | 177.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
Related Ropinirole Standards
- Ropinirole Impurity N68 (CAS 954117-24-9)
- Ropinirole Impurity 9 (CAS 23876-15-5)
- Ropinirole Impurity 4 (CAS 120427-93-2)
- Ropinirole Impurity 6 (CAS 1368745-05-4)
- Ropinirole Impurity 20 (CAS CATO-C4X-174520)
- Ropinirole Impurity 10 (CAS 101566-00-1)
- Ropinirole EP Impurity D (CAS 106916-16-9)
- Ropinirole Impurity 17 (CAS 120427-96-5)
Recommended Standards
- Lidocaine Impurity 88 (CAS 1903300-52-6)
- Verapamil Impurity 24 (CAS 18086-24-3)
- Furosemide Impurity 32 (CAS 18240-50-1)
- Brivaracetam Impurity 21 (CAS 90719-32-7)
- Ivabradine impurity 88 (CAS 35202-55-2)
- Remdesivir Impurity 42 (CAS 1191237-66-7)
- Docetaxel Impurity 69 (CAS 155396-69-3)
- 3-(4-Bromobenzyl)quinazolin-4(3H)-one (CAS 302913-19-5)
- Crisaborole lmpurity 101 (CAS CATO-C4X-2021101)
- 7-(Trifluoromethoxy)-1,2,3,4-tetrahydroisoquinolin-1-one (CAS 1340134-64-6)
- Pentanimidamide Hydrochloride (CAS 18257-46-0)
- 2-(Trifluoromethyl)naphthalene-6-boronic acid (CAS 870822-82-5)
- 1-(2-Chloro-6-ethylquinolin-3-yl)ethanol (CAS 1017403-12-1)
- D-Leu14-Tirzepatide (CAS CATO-CPTD788920)
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