Ornidazole Impurity C42 CAS 934-63-4
| CAS No. | 934-63-4 |
| Molecular Formula | C4H5N3O3 |
| Molecular Weight | 143.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C4H5N3O3, Ornidazole Impurity C42 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 143.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Ornidazole Impurity C42 (CAS 934-63-4) is a certified pharmaceutical impurity reference standard with the molecular formula C4H5N3O3 and a molecular weight of 143.10 g/mol.
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 | C4H5N3O3 |
| Molecular Weight | 143.10 g/mol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related Ornidazole Standards
- Ornidazole Impurity 89 (CAS CATO-C4X-133189)
- Ornidazole Impurity 27 (CAS 33543-81-6)
- Ornidazole Impurity 17 (CAS 95880-35-6)
- Ornidazole impurity 33 (CAS CATO-C4X-133133)
- Ornidazole Impurity 41 (CAS 112258-56-7)
- Ornidazole Impurity 38 (CAS CATO-C4X-133138)
- Ornidazole Impurity 43 (CAS CATO-C4X-133143)
- Ornidazole Impurity 23 (CAS 19183-16-5)
Recommended Standards
- Methyl 5-oxo-4,5-dihydroisoxazole-3-carboxylate (CAS 882530-43-0)
- Nifuratel Impurity 26 (CAS 2493-04-1)
- Methyl 5-amino-1,3,4-oxadiazole-2-carboxylate (CAS 7271-41-2)
- Methyl 2-oxooxazole-3(2H)-carboxylate (CAS 93228-48-9)
- Albendazole Impurity N14 (Calcium Cyanamide) (CAS 156-62-7)
- Mivacurium chloride Impurity 24 (CAS 188956-91-4)
- Venetoclax Impurity 37 (CAS CATO-C4X-249537)
- 3-Methyl-5-(trifluoromethoxy)benzoic acid (CAS 916420-51-4)
- 2-Bromo-6-chlorobenzene-1-thiol (CAS 1263376-31-3)
- 2-(2-Cyclopropyl-6-(methoxycarbonyl)-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-5-yl)acetic acid (CAS 863763-66-0)
- 4-[5-(Piperidin-3-yl)-1,2,4-oxadiazol-3-yl]pyridine (CAS 1036559-05-3)
- Gefitinib Impurity 25 (CAS 385784-68-9)
- 4-Fluoro-3-(trifluoromethyl)benzene-1,2-diamine (CAS 1440535-07-8)
- Autocamtide-2-Related Inhibitory Peptide TFA (CAS 167114-91-2（free base）)
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