2-Chloro-6-(methylsulfonyl)quinoxaline CAS 55686-99-2
| CAS No. | 55686-99-2 |
| Molecular Formula | C9H7ClN2O2S |
| Molecular Weight | 242.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Chloro-6-(methylsulfonyl)quinoxaline.
2-Chloro-6-(methylsulfonyl)quinoxaline (CAS 55686-99-2) is a high-purity analytical reference standard with the molecular formula C9H7ClN2O2S and a molecular weight of 242.68 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Chloro-6-(methylsulfonyl)quinoxaline is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 242.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C9H7ClN2O2S |
| Molecular Weight | 242.68 g/mol |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-((6-Chloro-1H-benzo[d]imidazol-2-yl)thio)acetic acid (CAS 5450-31-7)
- 3-(2-Methoxyacetamido)azetidine-1-sulfonyl chloride (CAS 2301886-58-6)
- 1-deoxysphingosine (CAS 193222-34-3)
- 2-Methyl-3-(1-methyl-1h-indazol-3-yl)propanoic acid (CAS 1538927-87-5)
- 2-Propylcyclohex-2-en-1-one (CAS 59034-18-3)
- tert-Butyl 3a-(aminomethyl)octahydro-1H-indole-1-carboxylate (CAS 2138231-04-4)
- 1-(5-(Aminomethyl)pyridin-2-yl)-N,N-dimethylmethanamine (CAS 1528646-05-0)
- 7,7-dimethyl-1$l^{6},4-thiazepane-1,1-dione hydrochloride (CAS 1787855-34-8)
- Orlistat Impurity 2 (CAS 104872-28-8)
- 3-Amino-N-(3-fluorophenyl)propanamide hydrochloride (CAS 1269053-24-8)
- Ethyl 3-amino-4-(4-methylphenyl)thiophene-2-carboxylate (CAS 1216144-70-5)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
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