Pramipexole Impurity 42 CAS 1797134-75-8
| CAS No. | 1797134-75-8 |
| Molecular Formula | C18H23N3O2S |
| Molecular Weight | 345.46 g/mol |
| 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.
Pramipexole Impurity 42 (CAS 1797134-75-8) is a certified pharmaceutical impurity reference standard with the molecular formula C18H23N3O2S and a molecular weight of 345.46 g/mol.
The molecular framework of Pramipexole Impurity 42 (C18H23N3O2S) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H23N3O2S |
| Molecular Weight | 345.46 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Pramipexole Standards
- Pramipexole Impurity 87 (CAS CATO-C4X-110787)
- Pramipexole impurity 76 (CAS CATO-C4X-110776)
- Pramipexole Impurity 81 (CAS CATO-C4X-110781)
- Pramipexole Impurity 82 (CAS CATO-C4X-110782)
- Pramipexole Impurity 67 (CAS CATO-C4X-110767)
- Pramipexole Impurity 6 (CAS 104618-33-9)
- Pramipexole Impurity 88 (CAS CATO-C4X-110788)
- Pramipexole Impurity 89 (CAS CATO-C4X-110789)
Recommended Standards
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- N-cyclohexyl-2-(4-(4,4,5,5-tetramethyl-1,3-dioxolan-2-yl)phenoxy)acetamide (CAS 1704122-23-5)
- 1-(Bromomethyl)-1-((2,2,2-trifluoroethoxy)methyl)cyclopropane (CAS 1496897-69-8)
- 2-Hydroxy-6-isopropylisonicotinic acid (CAS 90610-30-3)
- 4-((2-Chloro-4-fluorobenzyl)oxy)benzenesulfonyl chloride (CAS 1036509-25-7)
- 3-BENZYLCYCLOBUTANONE (CAS 55262-02-7)
- Gly-Neuroendocrine Regulatory Peptide-3 (human, mouse, rat) trifluoroacetate salt (CAS 1815618-19-9)
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