Ornidazole Impurity 2 CAS 31876-69-4
| CAS No. | 31876-69-4 |
| Molecular Formula | C7H9N3O3 |
| Molecular Weight | 183.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ornidazole Impurity 2 (CAS 31876-69-4), a pharmacopoeial impurity reference standard (molecular formula C7H9N3O3, MW 183.16 g/mol) used for the identification and quantification of trace impurities in APIs.
Ornidazole Impurity 2 (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. 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 2 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 | >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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 3 |
Related Ornidazole Standards
- Ornidazole impurity 1 (CAS 1100750-18-2)
- Ornidazole Impurity 112 (CAS 943967-79-1)
- 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)
Recommended Standards
- Cefuroxime Impurity 41 (CAS CATO-C4X-124541)
- 2-Amino-5-hydroxy-4-methoxybenzoic acid (CAS 31839-21-1)
- Sunitinib Impurity 5 (CAS 5434-29-7)
- CAS 16935-05-0 (CAS 16935-05-0)
- Vaborbactam Impurity 5 (CAS CATO-C4X-34775)
- Ranitidine EP Impurity D (CAS 117846-02-3)
- Posaconazole Impurity 42 (CAS CATO-C4X-141842)
- ethyl 9-methylcarbazole-2-carboxylate (CAS 89374-80-1)
- 2-(8-Ethyl-2,4-dioxo-1,3-diazaspiro[4.5]Decan-3-yl)acetic acid (CAS 790725-81-4)
- 5,6-Dimethyluracil (CAS 26305-13-5)
- 5-Chloro-N-methyl-2-nitroaniline (CAS 35966-84-8)
- 6-(2,6-Difluorophenyl)nicotinic acid (CAS 505082-96-2)
- Arbidol Impurity 4 (CAS 1130901-04-0)
- Galanin (1-13)-Neuropeptide Y (25-36) amide (CAS 147138-51-0)
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