Urapidil Impurity 5 CAS 34661-73-9
| CAS No. | 34661-73-9 |
| Molecular Formula | C19H26ClN5O2 |
| Molecular Weight | 391.90 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Urapidil Impurity 5 (C19H26ClN5O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Urapidil Impurity 5 (CAS 34661-73-9, C19H26ClN5O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 manufactures Urapidil Impurity 5 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 | C19H26ClN5O2 |
| Molecular Weight | 391.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Urapidil Standards
- Urapidil (CAS 34661-75-1)
- Urapidil Impurity 4 (CAS 34661-79-5)
- Urapidil Impurity 42 (CAS CATO-C4X-192442)
- Urapidil Impurity 58 (CAS CATO-C4X-192458)
- Urapidil Impurity 59 (CAS CATO-C4X-192459)
- Urapidil impurity 102 (CAS CATO-C4X-1924102)
- Urapidil Impurity 47 (CAS CATO-C4X-192447)
- Urapidil Impurity 23 (CAS CATO-C4X-192423)
Recommended Standards
- 4-Fluoro-3,5-diiodobenzoic acid (CAS 847862-87-7)
- 5-Hydroxy-Clethodim Sulfoxide (CAS 111031-08-4)
- (2-Chloropyridin-3-yl)bis(2-(methylthio)pyrimidin-4-yl)methanol (CAS 330823-21-7)
- 1365962-47-5 Ethyl 2-[(2-chloropropanoyl)amino]-6-phenyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate MFCD22056594 (CAS 1365962-47-5)
- Atrasentan Impurity 41 (CAS 178738-93-7)
- Bendamustine Impurity 4 (CAS 3543-73-5)
- Oxacillin Impurity 14 (CAS CATO-C4X-232114)
- 1H,2H,3H-pyrrolo[2,3-b]pyridine-5-carbonitrile (CAS 267413-07-0)
- 2,6-Dichloro-3-(trifluoromethyl)benzenesulfonyl chloride (CAS 1706458-88-9)
- 4-(Methylthio)-2-oxo-6-phenyl-1,2-dihydropyridine-3-carbonitrile (CAS 57663-06-6)
- 7'-Chloro-2',3',4',9'-tetrahydrospiro[piperidine-4,1'-pyrido[3,4-b]indole] (CAS 2612060-19-0)
- 1,2,3,4-Tetrahydro-[2,7]naphthyridine dihydrochloride (CAS 449175-32-0)
- Metoclopramide impurity 69 (CAS 476614-92-3)
- Liraglutide Impurity 28 (CAS CATO-C4X-199228)
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