Dihydralazine EP Impurity A CAS 649765-80-0
| CAS No. | 649765-80-0 |
| Molecular Formula | C8H9N5 |
| Molecular Weight | 175.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Dihydralazine EP Impurity A is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Dihydralazine EP Impurity A (CAS 649765-80-0) is a certified pharmaceutical impurity reference standard with the molecular formula C8H9N5 and a molecular weight of 175.19 g/mol.
Dihydralazine EP Impurity A (C8H9N5) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Dihydralazine EP Impurity A 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 | C8H9N5 |
| Molecular Weight | 175.19 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 5 |
Related Dihydralazine Standards
- Dihydralazine EP Impurity C (CAS 86-54-4)
- Dihydralazine Impurity 6 (CAS CATO-C4X-20786)
- Dihydralazine Impurity 5 (CAS CATO-C4X-20785)
- Dihydralazine Mesylate - API Standards (CAS 69467-96-5)
- Dihydralazine Hydrochloride EP Impurity C (CAS 304-20-1)
- Dihydralazine EP Impurity A HCl (CAS 649765-80-0 (free base))
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