Theophylline EP Impurity D CAS 6736-40-9
| CAS No. | 6736-40-9 |
| Molecular Formula | C6H10N4O |
| Molecular Weight | 154.17 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.
As a process- or degradation-related impurity, Theophylline EP Impurity D (CAS 6736-40-9, C6H10N4O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Theophylline EP Impurity D (C6H10N4O) contains an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Theophylline EP Impurity D under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H10N4O |
| Molecular Weight | 154.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 4 |
Related Theophylline Standards
- Theophylline Impurity 8 (CAS 5309-70-6)
- Theophylline Impurity 2 (CAS 6136-37-4)
- Theophylline EP Impurity B (CAS 1076-22-8)
- Theophylline Impurity 43 (CAS 63125-83-7)
- Theophylline Impurity 3 (CAS 40012-14-4)
- Theophylline Impurity 4 (CAS 20289-44-5)
- Theophylline Impurity 27 (CAS 15837-08-8)
- Theophylline-1,3-15N2,13C (CAS 1246816-25-0)
Recommended Standards
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- Butalbital Impurity 8 (CAS CATO-C4X-19838)
- Tofacitinib Impurity 201 (CAS CATO-C4X-1079201)
- Irinotecan Impurity 60 (CAS CATO-C4X-166760)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com