Ornidazole Impurity 28 CAS CATO-C4X-133128
| CAS No. | CATO-C4X-133128 |
| Molecular Formula | C7H11ClN2O2 |
| Molecular Weight | 190.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ornidazole Impurity 28 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.
CATO supplies Ornidazole Impurity 28 (CAS CATO-C4X-133128), a pharmacopoeial impurity reference standard (molecular formula C7H11ClN2O2, MW 190.63 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ornidazole Impurity 28 (C7H11ClN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 190.63 g/mol, it falls into the medium-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C7H11ClN2O2 |
| Molecular Weight | 190.63 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Ornidazole Standards
- Ornidazole Impurity C12 (CAS 13182-81-5)
- Ornidazole Impurity 97 (CAS CATO-C4X-133197)
- Ornidazole Impurity 110 (CAS 4580-83-0)
- Ornidazole impurity 1 (CAS 1100750-18-2)
- Ornidazole Impurity 112 (CAS 943967-79-1)
- Ornidazole Impurity 2 (CAS 31876-69-4)
- Ornidazole Impurity 3 (CAS 16773-52-7)
- Ornidazole Impurity 35 (CAS CATO-C4X-133135)
Recommended Standards
- Vildagliptin Impurity 60 (CAS 1211679-98-9)
- 5-Chloro-2-(ethylthio)pyrimidin-4(1H)-one (CAS 106146-79-6)
- Vildagliptin Impurity 59 (CAS 214398-99-9)
- N-(5-(Chloromethyl)thiazol-2-yl)acetamide (CAS 1092696-77-9)
- Nabumetone Impurity 27 (CAS 98386-82-4)
- CAS 1039808-70-2 (CAS 1039808-70-2)
- Tolvaptan Impurity 41 (CAS 1580889-32-2)
- 2-[4-(4-Chloro-3-fluorophenoxy)phenyl]-6-phenyl-4-(trifluoromethyl)pyridine-3-carbonitrile (CAS 478248-04-3)
- 5-(((5-Methylisoxazol-3-yl)methyl)thio)-1,3,4-thiadiazol-2-amine (CAS 875750-30-4)
- 4-Methoxyphenyl 3-O-benzyl-β-D-glucopyranoside (CAS 303127-80-2)
- Ethyl 2-amino-4-(3-cyanophenyl)thiophene-3-carboxylate (CAS 849659-40-1)
- 4-Isocyanoacetophenone (CAS 245539-10-0)
- 2,5-Bis(methylamino)cyclohexa-2,5-diene-1,4-dione (CAS 1654-14-4)
- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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