Urapidil Impurity 42 CAS CATO-C4X-192442
| CAS No. | CATO-C4X-192442 |
| Molecular Formula | C20H29N5O3 |
| Molecular Weight | 387.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Urapidil Impurity 42 (CAS CATO-C4X-192442, C20H29N5O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Urapidil Impurity 42 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 387.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Urapidil Impurity 42 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 | C20H29N5O3 |
| Molecular Weight | 387.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Nitrogen Atoms | 5 |
Related Urapidil Standards
- Urapidil (CAS 34661-75-1)
- Urapidil Impurity 4 (CAS 34661-79-5)
- Urapidil Impurity 58 (CAS CATO-C4X-192458)
- Urapidil Impurity 59 (CAS CATO-C4X-192459)
- Urapidil Impurity 23 (CAS CATO-C4X-192423)
- Urapidil Impurity 5 (CAS 34661-73-9)
- Urapidil impurity 102 (CAS CATO-C4X-1924102)
- Urapidil Impurity 47 (CAS CATO-C4X-192447)
Recommended Standards
- Cilostazol Impurity 10 (CAS 1797509-92-2)
- Methyl (2Z)-3-[(4-ethylphenyl)amino]-2-[4-(propan-2-yl)benzenesulfonyl]prop-2-enoate (CAS 1327173-79-4)
- Tofacitinib Impurity 95 (CAS CATO-C4X-107995)
- Methyl (2Z)-2-(4-tert-butylbenzenesulfonyl)-3-[(4-methylphenyl)amino]prop-2-enoate (CAS 1327178-28-8)
- Pitavastatin Impurity 81 (CAS CATO-C4X-103781)
- Phenylbutyrate EP Impurity B (CAS 529-34-0)
- Terbutaline impurity 68 (CAS CATO-C4X-118368)
- 2-(4-Chlorophenyl)-5-{2-[(4-methylphenyl)methanesulfonyl]phenyl}-1,3,4-oxadiazole (CAS 339104-33-5)
- 5-Methoxyquinazolin-4(3H)-one (CAS 135106-52-4)
- 4-(Piperidin-3-yl)pyrimidine (CAS 1185194-36-8)
- 2-(3-Ethylphenyl)oxazole-4-carbaldehyde (CAS 885273-23-4)
- 1,3-Dipalmitoyl-glycero-2-phosphoethanolamine (CAS 67303-93-9)
- 2-Hydroxy-3,3-diphenylpropanoic acid (CAS 41858-47-3)
- (9-D-Asp) Semaglutide X Sodium salt (CAS CATO-CPTD788617)
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