1-(5-Chloro-2H-indazol-2-yl)ethan-1-one CAS 98083-44-4
| CAS No. | 98083-44-4 |
| Molecular Formula | C9H7ClN2O |
| Molecular Weight | 194.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 194.62 g/mol gives 1-(5-Chloro-2H-indazol-2-yl)ethan-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(5-Chloro-2H-indazol-2-yl)ethan-1-one (CAS 98083-44-4), molecular formula C9H7ClN2O and molecular weight 194.62 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H7ClN2O, 1-(5-Chloro-2H-indazol-2-yl)ethan-1-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 194.62 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H7ClN2O |
| Molecular Weight | 194.62 g/mol |
| Appearance | Off-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 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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Recommended Standards
- 1-(5-Chloro-1H-indazol-3-yl)ethanone (CAS 932698-80-1)
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- 5-Bromo-2-iodo-pyridine-3-carbonitrile (CAS 1346540-97-3)
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- 2-(1-(1H-Benzo[d]imidazol-2-yl)ethylidene)hydrazinecarbothioamide (CAS 15449-86-2)
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- 2-((4-Fluorophenyl)thio)-N-(5-(pyridin-2-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 923150-40-7)
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