1-(3,5-Dichloro-6-cyclopropylpyrazin-2-yl)ethanone CAS 1935943-01-3
| CAS No. | 1935943-01-3 |
| Molecular Formula | C9H8Cl2N2O |
| Molecular Weight | 231.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(3,5-Dichloro-6-cyclopropylpyrazin-2-yl)ethanone (CAS 1935943-01-3), molecular formula C9H8Cl2N2O and molecular weight 231.08 g/mol, is a CATO reference standard with documented purity and traceability.
1-(3,5-Dichloro-6-cyclopropylpyrazin-2-yl)ethanone (C9H8Cl2N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H8Cl2N2O |
| Molecular Weight | 231.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 8,9-Dichloro-2,3,4,5-tetrahydro-1-benzoxepin-5-one (CAS 1094253-83-4)
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Recommended Standards
- 5,7-Dichloro-6-ethyl-1,3-benzoxazol-2-amine (CAS 1820706-11-3)
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- 2,6-Dichloro-3-nitrobenzyl Bromide (CAS 83141-02-0)
- 3-[3-(3,5-Dichlorophenoxy)propyl]-3,4-dihydro-1,2,3-benzotriazin-4-one (CAS 866009-38-3)
- 4-Chloro-3,5-dibromoisopropylbenzene (CAS 1160574-99-1)
- 1-Chloro-2,4-difluoro-3-methoxy-5-methylbenzene (CAS 1881293-02-2)
- 5-(tert-Butyl)indole-3-carbaldehyde (CAS 1369055-82-2)
- 1-Methyl-3-phenylbenzo[f]quinoline (CAS 4067-82-7)
- 6-(tert-Butyl)-3-nitropyridin-2-amine (CAS 893444-19-4)
- 2-Phenoxy-4-nitro-benzophenone (CAS 1330277-49-0)
- 2-BROMO-4-METHYLPYRIDINE 2-BROMO-4-PICOLINE 4-METHYL-2-BROMOPYRIDINE 4926-28-7 BC002108 (CAS 4926-28-7)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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