Ornidazole Impurity 57 CAS CATO-C4X-133157
| CAS No. | CATO-C4X-133157 |
| Molecular Formula | C4H4N4O4 |
| Molecular Weight | 172.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ornidazole Impurity 57 is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ornidazole Impurity 57 (CAS CATO-C4X-133157) is a certified pharmaceutical impurity reference standard with the molecular formula C4H4N4O4 and a molecular weight of 172.10 g/mol.
Structurally, Ornidazole Impurity 57 (C4H4N4O4) contains a carbohydrate-derived structure, an amide group. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 172.10 g/mol, it falls into the medium-molecular-weight range. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H4N4O4 |
| Molecular Weight | 172.10 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 23 (CAS 19183-16-5)
- Ornidazole Impurity 40 (CAS 19182-82-2)
- Ornidazole Impurity 88 (CAS CATO-C4X-133188)
- Ornidazole Impurity 16 (CAS 1565482-62-3)
- Ornidazole Impurity 38 (CAS CATO-C4X-133138)
- Ornidazole Impurity 43 (CAS CATO-C4X-133143)
- Ornidazole Impurity 111 (CAS CATO-C4X-1331111)
- Ornidazole impurity 1 (CAS 1100750-18-2)
Recommended Standards
- 5-Fluoro-4-methyl-3-nitropyridin-2-ol (CAS 1003711-68-9)
- Methyl 5-nitro-2H-1,2,3-triazole-4-carboxylate (CAS 524036-06-4)
- n'-Hydroxy-2-(2,2,2-trifluoroethoxy)acetimidamide (CAS 1016846-60-8)
- Methyl 3-nitroisoxazole-5-carboxylate (CAS 40995-06-0)
- Tirzepatide Impurity 1 (CAS 2460751-66-8)
- Tosufloxacin impurity 5 (CAS CATO-C4X-19765)
- Relugolix Impurity200-D3 (CAS CATO-C4X-2429200)
- 2-(4-(Aminomethyl)phenyl)acetonitrile (CAS 1784785-25-6)
- 5-Methyl-6-(trifluoromethyl)nicotinic acid (CAS 1105979-57-4)
- 2-((4-Ethylcyclohexyl)amino)propan-1-ol (CAS 1154899-83-8)
- 2-(4-Methoxy-1H-indol-1-yl)ethan-1-ol (CAS 181053-27-0)
- N-(thiophen-2-ylmethyl)-2-(m-tolyloxy)ethan-1-amine (CAS 1181661-20-0)
- 2-((1-(2-Fluorophenyl)ethyl)amino)butan-1-ol (CAS 1038235-27-6)
- (Tyr?)-C-Type Natriuretic Peptide (32-53) (human, porcine, rat) (CAS 142878-79-3)
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