Ornidazole impurity 1 CAS 1100750-18-2
| CAS No. | 1100750-18-2 |
| Molecular Formula | C7H9N3O3 |
| Molecular Weight | 183.16 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.
Ornidazole impurity 1 (CAS 1100750-18-2) is a certified pharmaceutical impurity reference standard with the molecular formula C7H9N3O3 and a molecular weight of 183.16 g/mol.
Ornidazole impurity 1 (C7H9N3O3) 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. 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), Ornidazole impurity 1 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 | C7H9N3O3 |
| Molecular Weight | 183.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Related Ornidazole Standards
- Ornidazole Impurity 112 (CAS 943967-79-1)
- Ornidazole Impurity 2 (CAS 31876-69-4)
- Ornidazole Impurity 3 (CAS 16773-52-7)
- Ornidazole Impurity 35 (CAS CATO-C4X-133135)
- Ornidazole Impurity 9 (CAS 16773-51-6)
- Ornidazole Impurity 97 (CAS CATO-C4X-133197)
- Ornidazole Impurity 111 (CAS CATO-C4X-1331111)
- Ornidazole Impurity C12 (CAS 13182-81-5)
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