Urapidil Impurity 35 CAS CATO-C4X-192435
| CAS No. | CATO-C4X-192435 |
| Molecular Formula | C20H29N5O4 |
| Molecular Weight | 403.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Urapidil Impurity 35 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.
As a process- or degradation-related impurity, Urapidil Impurity 35 (CAS CATO-C4X-192435, C20H29N5O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Urapidil Impurity 35 (C20H29N5O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 403.48 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C20H29N5O4 |
| Molecular Weight | 403.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 Impurity 10 (CAS CATO-C4X-192410)
- Urapidil Impurity 12 (CAS 88733-12-4)
- Urapidil Impurity 34 (CAS 62845-30-1)
- Urapidil Impurity 68 (CAS 1703052-28-1)
- Urapidil Impurity 89 (CAS CATO-C4X-192489)
- Urapidil Impurity 17 (CAS 34661-85-3)
- Urapidil Impurity 49 (CAS CATO-C4X-192449)
- Urapidil Impurity 57 (CAS CATO-C4X-192457)
Recommended Standards
- Darolutamide Impurity 34 (CAS CATO-C4X-310634)
- Fenchlorazol-Ethyl (CAS 103112-35-2)
- N-(5-Guanidino-1-(naphthalen-2-ylamino)-1-oxopentan-2-yl)benzamide (CAS 305-09-9)
- Boc-D-Pen(NPys)-OH (CAS 153815-23-7)
- Fluconazole Impurity 36 (CAS CATO-C4X-101936)
- Sitagliptin impurity 146 (CAS CATO-C4X-1144146)
- Mirtazapine Impurity 3 (CAS 852524-23-3)
- Ethyl 5-bromo-3-methylpyrazine-2-carboxylate (CAS 1823942-60-4)
- 1,4-Bis(brommethyl)-2,5-dichlorobenzene (CAS 19036-27-2)
- 2-(2-Amino-1,3-thiazol-4-yl)-n-cyclopropylacetamide (CAS 1019117-28-2)
- 4-Hydrazinyl-N-(1,3-thiazol-2-yl)benzene-1-sulfonamide dihydrochloride (CAS 1375473-10-1)
- 1,4-Dihydro-1-phenyl-3(2H)-isoquinolinone (CAS 17507-05-0)
- 1-(methoxymethyl)cyclopropan-1-amine (CAS 1029716-05-9)
- Osteoblast Activating Peptide (mouse, rat) (H-7262.0500) (CAS 1222950-80-2)
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