Metronidazole impurity 23 CAS CATO-C4X-140523
| CAS No. | CATO-C4X-140523 |
| Molecular Formula | C4H5N3O |
| Molecular Weight | 111.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Metronidazole impurity 23.
As a process- or degradation-related impurity, Metronidazole impurity 23 (CAS CATO-C4X-140523, C4H5N3O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Metronidazole impurity 23 (C4H5N3O) contains an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 111.10 g/mol, it falls into the low-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.
CATO manufactures Metronidazole impurity 23 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H5N3O |
| Molecular Weight | 111.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 3 |
Related Metronidazole Standards
- Metronidazole EP Impurity B (CAS 3034-38-6)
- Metronidazole Impurity 11 (CAS 3034-41-1)
- Metronidazole Impurity 24 (CAS 3034-42-2)
- Metronidazole Impurity 35 (CAS CATO-C4X-140535)
- Metronidazole Impurity 16 (CAS 138169-63-8)
- Metronidazole Impurity 26 (CAS 5006-79-1)
- Metronidazole Impurity 31 (CAS CATO-C4X-140531)
- Metronidazole EP Impurity C (CAS 5006-69-9)
Recommended Standards
- 2,4-Dihydroxypyridine (CAS 626-03-9)
- Relugolix Impurity 55 (CAS 57041-95-9)
- Lamivudine EP Impurity E (CAS 71-30-7)
- 2,3-Dihydroxypyridine (CAS 16867-04-2)
- Glycopyrronium Bromide EP Impurity B (CAS 611-73-4)
- Dotinurad Impurity 253 (CAS CATO-C4X-2494253)
- Tetrabenazine Impurity 52 (CAS CATO-C4X-274852)
- 2-(3-Ethyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-2-yl)acetic acid (CAS 1780072-41-4)
- 4-((4-Chloro-N-methylphenyl)sulfonamido)-N-(p-tolyl)butanamide (CAS 328015-47-0)
- 5274-70-4 Benzaldehyde, 2-hydroxy-3-nitro- 3-Nitrosalicylaldehyde EINECS 226-098-7 2-Hydroxy-3-nitrobenzaldehyde 3-Nitro-2-hydroxybenzaldehyde NSC 38026 Salicylaldehyde, 3-nitro- (CAS 5274-70-4)
- 4-(2-Ethylhexyl)-4H-thieno[3,2-b]pyrrole-5,6-dione (CAS 1147124-46-6)
- 5-(2-Bromophenyl)-1,3,4-oxadiazole-2-thiol (CAS 161013-20-3)
- 1-(Tert-butoxycarbonyl)-4-methylpiperazine-2-carboxylic acid (CAS 1263377-93-0)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
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