2,6-Dichloropyrazine 1-oxide CAS 61655-70-7
| CAS No. | 61655-70-7 |
| Molecular Formula | C4H2Cl2N2O |
| Molecular Weight | 164.98 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.
2,6-Dichloropyrazine 1-oxide (CAS 61655-70-7) is a high-purity analytical reference standard with the molecular formula C4H2Cl2N2O and a molecular weight of 164.98 g/mol.
The molecular framework of 2,6-Dichloropyrazine 1-oxide (C4H2Cl2N2O) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 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 | C4H2Cl2N2O |
| Molecular Weight | 164.98 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloropyrazine Standards
- 3,5-Dichloropyrazine-2-carbonitrile (CAS 313339-92-3)
- 4774-14-5 2,6-Dichloropyrazine Pyrazine, 2,6-dichloro- AI3-61780 EINECS 225-316-8 (CAS 4774-14-5)
- 3,6-Dichloropyrazine-2-carbaldehyde (CAS 1357172-39-4)
- 3,5-Dichloropyrazine-2-carbaldehyde (CAS 136866-27-8)
- 3,5-Dichloropyrazine-2-methanol (CAS 313339-89-8)
- 2,5-Dichloropyrazine (CAS 19745-07-4)
- 2,3-Dichloropyrazine (CAS 4858-85-9)
- 3,5-Dichloropyrazine-2-carboxamide (CAS 312736-50-8)
Recommended Standards
- 4,6-Dichloropyridazin-3(2H)-one (CAS 17285-37-9)
- 3,6-Dichloropyridazin-4(1H)-one (CAS 53337-81-8)
- 5,6-Dichloropyridazin-3(2H)-one (CAS 17285-36-8)
- 3,6-Dichloropyridazin-4-o (CAS 2779-81-9)
- Tert-butyl ((1R,2R,4S)-2-hydroxy-4-(hydroxymethyl)cyclopentyl)carbamate (CAS 859147-41-4)
- N-[4-Phenyl-6-(trifluoromethyl)pyrimidin-2-yl]thiourea (CAS 1424940-60-2)
- 4-Ethoxybenzofuran-6-amine (CAS 1330752-29-8)
- (7-Chloro-2,3-dihydrobenzofuran-2-yl)methanol (CAS 26018-44-0)
- Ethyl 2-[(5-Chloro-2-pyridyl)amino]acetate Hydrochloride (CAS 1956332-71-0)
- 5-(2-Ethoxyethyl)-3,3-diethyldihydrofuran-2(3H)-one (CAS 827017-67-4)
- 2,2,3-Trifluoropropanoic acid (CAS 679-88-9)
- Ethyl 4-Acetamidophenylacetate (CAS 13475-17-7)
- 5-methyl-1,2,4-thiadiazol-3-amine (CAS 27182-55-4)
- Peptide 441 (CAS CATO-CPTD788441)
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