4-Chloro-N-(3-chloroquinoxalin-2-yl)-3-nitrobenzenesulfonamide CAS 522628-96-2
| CAS No. | 522628-96-2 |
| Molecular Formula | C14H8Cl2N4O4S |
| Molecular Weight | 399.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 399.21 g/mol gives 4-Chloro-N-(3-chloroquinoxalin-2-yl)-3-nitrobenzenesulfonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Chloro-N-(3-chloroquinoxalin-2-yl)-3-nitrobenzenesulfonamide (CAS 522628-96-2) is a high-purity analytical reference standard with the molecular formula C14H8Cl2N4O4S and a molecular weight of 399.21 g/mol.
4-Chloro-N-(3-chloroquinoxalin-2-yl)-3-nitrobenzenesulfonamide (C14H8Cl2N4O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C14H8Cl2N4O4S |
| Molecular Weight | 399.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
- (S)-2-amino-3-(4-((1,1,1,3,3,3-hexafluoro-2-(trifluoromethyl)propan-2-yl)oxy)phenyl)propanoic acid (CAS 1622172-73-9)
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- 1-(Benzyloxy)-3-((2-bromo-5-fluoro-4-nitrophenyl)amino)propan-2-ol (CAS 1431698-06-4)
- 7-Iodo-5-(4-methylbenzenesulfonyl)-5H-pyrrolo[2,3-b]pyrazine (CAS 889451-27-8)
- (1S,2R,4S,5R)-1-(2-(tert-Butylamino)-2-oxoethyl)-2-((S)-hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium bromide (CAS 2937392-08-8)
- 3-Bromo-5-(trifluoromethyl)pyridin-4-amine (CAS 1417622-88-8)
- 3,4-Di(3-indolyl)-1H-pyrrole-2,5-dione (CAS 119139-23-0)
- 5-(((3-Chlorophenyl)thio)methyl)-N-hydroxyisoxazole-3-carboxamide (CAS 823220-03-7)
- tert-Butyl 2-cyclohexylacetate (CAS 16537-06-7)
- Difelikefalin Impurity 50 (CAS CATO-C4X-304150)
- 4-Amino-2-chloronaphthalen-1-ol (CAS 120626-14-4)
- Methyl 5-amino-4,6-dimethylpicolinate (CAS 1799819-21-8)
- 2-[(2E)-1-(Dimethylamino)-3-[(2,5-dimethylphenyl)amino]prop-2-en-1-ylidene]propanedinitrile (CAS 339101-98-3)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788694)
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