Ornidazole impurity 33 CAS CATO-C4X-133133
| CAS No. | CATO-C4X-133133 |
| Molecular Formula | C4H4N4O3 |
| Molecular Weight | 156.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ornidazole impurity 33 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, Ornidazole impurity 33 (CAS CATO-C4X-133133, C4H4N4O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Ornidazole impurity 33 (C4H4N4O3) 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), Ornidazole impurity 33 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 | C4H4N4O3 |
| Molecular Weight | 156.10 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, 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 |
| Nitrogen Atoms | 4 |
Related Ornidazole Standards
- Ornidazole Impurity 41 (CAS 112258-56-7)
- Ornidazole Impurity C42 (CAS 934-63-4)
- Ornidazole Impurity 89 (CAS CATO-C4X-133189)
- Ornidazole Impurity 38 (CAS CATO-C4X-133138)
- Ornidazole Impurity 43 (CAS CATO-C4X-133143)
- Ornidazole Impurity 27 (CAS 33543-81-6)
- Ornidazole Impurity 23 (CAS 19183-16-5)
- Ornidazole Impurity 40 (CAS 19182-82-2)
Recommended Standards
- 2-Methyl-5-nitro-1-nitroso-1H-imidazole (CAS CATO-C3D-26194)
- Metronidazole Impurity 31 (CAS CATO-C4X-140531)
- 3,3,3-Trifluoro-2,2-dimethyl-propionic acid 3,3,3-Trifluoro-2,2-dimethylpropionic acid 889940-13-0 (CAS 889940-13-0)
- Ribavirin Impurity 37 (CAS CATO-C4X-141337)
- Nabumetone Impurity 15 (CAS CATO-C4X-284815)
- Indocyanine Green Impurity 49 (CAS CATO-C4X-250349)
- Caspofungin EP Impurity A (CAS 1202167-57-4)
- N-([1,2,4]triazolo[1,5-a]pyridin-8-yl)pentanamide (CAS 338419-03-7)
- Diethyl 2-((benzo[d][1,3]dioxol-5-ylamino)methylene)malonate (CAS 17394-77-3)
- 5-(3-Methoxyphenyl)-1,2,4-oxadiazol-3-amine (CAS 1340284-34-5)
- 1-(2-Bromoethoxy)-2-(2,2,2-trifluoroethoxy)benzene (CAS 160969-00-6)
- Tipranavir-d4 (CAS 1217819-15-2)
- 4-{[(4-chlorophenyl)sulfanyl]methyl}-2-(pyridin-2-yl)-6-(pyrrolidin-1-yl)pyrimidine (CAS 477866-89-0)
- Peptide WE-14 (CAS 115136-18-0)
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