Doxofylline Impurity 42 CAS 56548-04-0
| CAS No. | 56548-04-0 |
| Molecular Formula | C8H19NO4 |
| Molecular Weight | 193.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Doxofylline Impurity 42 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Doxofylline Impurity 42 (CAS 56548-04-0, C8H19NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Doxofylline Impurity 42 (C8H19NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Doxofylline 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 | C8H19NO4 |
| Molecular Weight | 193.24 g/mol |
| Purity | ＞95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
Related Doxofylline Standards
- Doxofylline Impurity 32 (CAS 633296-51-2)
- Doxofylline Impurity 22 (CAS 6632-68-4)
- Doxofylline Impurity 18 (CAS 42772-85-0)
- Doxofylline Impurity 2 (CAS 5614-53-9)
- Doxofylline Impurity 9 (CAS CATO-C4X-15139)
- Doxofylline Impurity 33 (CAS CATO-C4X-151333)
- Doxofylline Impurity 35 (CAS CATO-C4X-151335)
- Doxofylline Impurity 10 (CAS CATO-C4X-151310)
Recommended Standards
- Itopride Impurity 19 (CAS 15182-92-0)
- Norepinephrine Impurity 31 (CAS CATO-C4X-1514131)
- Mianserin impurity 38 (CAS CATO-C4X-136938)
- Formoterol Impurity 19 (CAS 126002-14-0)
- Epinephrine /Adrenaline Impurity 55 (CAS 60912-82-5)
- Apalutamide Impurity 112 (CAS CATO-C4X-2749112)
- Fluvoxamine EP Impurity B (CAS 89035-92-7)
- 4-(Difluoromethyl)-5-hydroxy-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 1806891-88-2)
- Methyl 6-methoxynicotinate (CAS 26218-80-4)
- 2-Bromo-2-fluoroethanol (CAS 459424-41-0)
- N-(4-Acetylphenyl)-5-methyl-2-furamide (CAS 549540-47-8)
- (R)-1-(3-ethoxyphenyl)ethan-1-amine (CAS 263893-81-8)
- 6-(4-Chlorophenyl)thieno[3,2-d]pyrimidine-4-thiol (CAS 854036-01-4)
- Angiotensin III Antipeptide (CAS 133605-55-7)
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