Ornidazole Impurity 21 CAS 109620-80-6
| CAS No. | 109620-80-6 |
| Molecular Formula | C6H8ClN3O3 |
| Molecular Weight | 205.60 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H8ClN3O3, Ornidazole Impurity 21 contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 205.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Ornidazole Impurity 21 (CAS 109620-80-6) is a certified pharmaceutical impurity reference standard with the molecular formula C6H8ClN3O3 and a molecular weight of 205.60 g/mol.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Ornidazole Impurity 21 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 | C6H8ClN3O3 |
| Molecular Weight | 205.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ornidazole Standards
- Ornidazole Impurity 14 (CAS 116989-52-7)
- Ornidazole Impurity 44 (CAS 13551-86-5)
- Ornidazole Impurity 45 (CAS CATO-C4X-133145)
- Ornidazole Impurity 46 (CAS CATO-C4X-133146)
- Ornidazole Impurity 64 (CAS CATO-C4X-133164)
- Ornidazole Impurity 98 (CAS CATO-C4X-133198)
- Ornidazole Impurity 106 (CAS CATO-C4X-1331106)
- Ornidazole Impurity 102 (CAS CATO-C4X-1331102)
Recommended Standards
- 6-Chloro-4-oxo-4H-chromene-3-carbonitrile (CAS 50743-20-9)
- 6-Chloro-2-oxo-2h-chromene-3-carbonitrile (CAS 28447-81-6)
- 5-Cyanobenzofuran-2-carbonyl chloride (CAS 84102-83-0)
- 5-Chloro-2-(1H-tetrazol-1-yl)benzonitrile (CAS 449758-28-5)
- Sibutramine Impurity 6 (CAS 2758418-79-8)
- Oseltamivir Impurity 246 (CAS CATO-C4X-1720246)
- Nilotinib Impurity N1 Nitrate salt (CAS 1025716-99-7)
- 5-(1-Methyl-1H-pyrazol-4-yl)-1H-indazol-3-amine (CAS 1093965-09-3)
- N-(4-acetylphenyl)-2-chloroacetamide (CAS 38283-38-4)
- (2Z)-2-[(2,5-Difluorophenyl)methylidene]-3-phenyl-2,3-dihydro-1H-inden-1-one (CAS 337921-69-4)
- 3-((2,6-Dichlorobenzyl)oxy)azetidine (CAS 1121586-62-6)
- 7-(1-Ethyl-1h-pyrazol-3-yl)-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1171033-76-3)
- (S)-Methyl 2-(2-chlorophenyl)-2-(((4-nitrophenyl)sulfonyl)oxy)acetate (CAS 223123-80-6)
- Tau Peptide (268-282) trifluoroacetate salt (CAS 330456-37-6)
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