Urapidil Impurity 12 CAS 88733-12-4
| CAS No. | 88733-12-4 |
| Molecular Formula | C20H29N5O4 |
| Molecular Weight | 403.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Urapidil Impurity 12 (CAS 88733-12-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H29N5O4 and a molecular weight of 403.48 g/mol.
Based on its molecular formula C20H29N5O4, Urapidil Impurity 12 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 403.48 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Urapidil Impurity 12 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 | 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 |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 5 |
Related Urapidil Standards
- Urapidil Impurity 10 (CAS CATO-C4X-192410)
- Urapidil Impurity 34 (CAS 62845-30-1)
- Urapidil Impurity 35 (CAS CATO-C4X-192435)
- 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
- N-(5-Guanidino-1-(naphthalen-2-ylamino)-1-oxopentan-2-yl)benzamide (CAS 305-09-9)
- N-(4-Ethoxy-3-methoxybenzyl)-5-methyl-2-(3-methylphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine (CAS 951494-27-2)
- N-(4-(N-(thiazol-2-yl)sulfamoyl)phenyl)-2-(m-tolyloxy)acetamide (CAS 312604-35-6)
- Darolutamide Impurity 34 (CAS CATO-C4X-310634)
- Cisatracurium Besilate EP Impurity F Iodide (CAS CATO-C4X-185046)
- Carteolol Impurity 37 (CAS CATO-C4X-228737)
- Olmesartan Impurity 23 (CAS CATO-C4X-109723)
- 2,6-Dimethyl-3-(5-phenyl-1,3,4-oxadiazol-2-yl)-4H-pyran-4-one (CAS 61820-57-3)
- N-(5-Amino-2-fluorophenyl)octanamide (CAS 1020053-91-1)
- tert-Butyl 1H,4H,5H,6H-pyrrolo[3,4-d]imidazole-5-carboxylate (CAS 1050886-49-1)
- N-(2-(Dimethylamino)ethyl)-6-methoxyacridine-4-carboxamide (CAS 106626-76-0)
- tert-Butyl 2-((2-chloro-N-isopropylacetamido)methyl)piperidine-1-carboxylate (CAS 1353943-73-3)
- (9Z,12Z,15E)-octadeca-9,12,15-trienoic acid (CAS CATO-C3D-262918)
- Peptide 431 (CAS CATO-CPTD788431)
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