Modafinil EP Impurity B-d5 CAS 1329496-95-8
| CAS No. | 1329496-95-8 |
| Molecular Formula | - |
| Molecular Weight | 294.38 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.
Modafinil EP Impurity B-d5 (CAS 1329496-95-8) is a certified pharmaceutical impurity reference standard with the molecular formula C15H10D5NO3S and a molecular weight of 294.38 g/mol.
Based on its molecular formula C15H10D5NO3S, Modafinil EP Impurity B-d5 contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 294.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a certified reference material (CRM), Modafinil EP Impurity B-d5 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 | C15H10D5NO3S |
| Molecular Weight | 294.38 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Modafinil Standards
- Modafinil impurity 3 (CAS 101094-05-7)
- (R)-Modafinil EP Impurity C (CAS 713134-72-6)
- (S)-Modafinil EP Impurity C (CAS 865811-65-0)
- Modafinil impurity 8 (CAS 827604-01-3)
- Modafinil-d10 Carboxylate (CAS 1246819-82-8)
- Modafinil impurity 9 (CAS CATO-C4X-17039)
- Modafinil EP Impurity A (CAS 63547-24-0)
- (R)-Modafinil EP Impurity A (CAS 112111-45-2)
Recommended Standards
- 2-(6-(Methylthio)-4-morpholino-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethan-1-amine (CAS 1105197-45-2)
- (4-fluorotetrahydropyran-4-yl)methyl 4-methylbenzenesulfonate (CAS 1544739-64-1)
- Guaiazulene Impurity 10 (CAS CATO-C4X-223710)
- 3,6,9,12,15-Pentaoxanonadecan-1-ol (CAS 1786-94-3)
- Perindopril Impurity 41 (CAS CATO-C4X-125241)
- Mycophenolic Acid Impurity 11 (CAS 38877-93-9)
- Chloropyramine Impurity 7 HCl (CAS 1135085-85-6)
- 4-(Difluoromethyl)-5-nitropyridine-3-sulfonamide (CAS 1805300-66-6)
- (2S, 3aS,7aS)-Octahydro-indole-2-carboxylic acid tert-butyl ester (CAS 80876-00-2)
- 8-Methylquinoline-2,3-dicarboxylic acid (CAS 892874-73-6)
- (2-Cyclopropyl-5-(trifluoromethyl)pyridin-3-yl)boronic acid (CAS 2225176-76-9)
- tert-Butyl 7-hydroxy-3,4-dihydroquinoline-1(2H)-carboxylate (CAS 676254-89-0)
- 3-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl didodecanoate (CAS 42436-56-6)
- Semaglutide impurity 71 (CAS CATO-C4X-222671)
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