2-Methoxy-5-nitrobenzenesulfonamide CAS 82020-46-0
| CAS No. | 82020-46-0 |
| Molecular Formula | C7H8N2O5S |
| Molecular Weight | 232.21 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-Methoxy-5-nitrobenzenesulfonamide.
2-Methoxy-5-nitrobenzenesulfonamide (CAS 82020-46-0), molecular formula C7H8N2O5S and molecular weight 232.21 g/mol, is a CATO reference standard with documented purity and traceability.
2-Methoxy-5-nitrobenzenesulfonamide (C7H8N2O5S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C7H8N2O5S |
| Molecular Weight | 232.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- N-Methoxy-2-nitrobenzenesulfonamide (CAS 1061696-67-0)
- 2-Methoxy-3-nitrobenzene-1-sulfonamide (CAS 1261827-86-4)
- 2-methoxy-4-nitrobenzene-1-sulfonamide (CAS 746630-16-0)
- 3-Methoxy-4-nitrobenzene-1-sulfonamide (CAS 22117-82-4)
- 4-Methoxy-2-nitrobenzene-1-sulfonamide (CAS 81792-84-9)
- 4-Methoxy-3-nitrobenzene-1-sulfonamide (CAS 22939-93-1)
- 5-methoxy-2-nitrobenzene-1-sulfonamide (CAS 6451-49-6)
- N-methoxy-3-nitrobenzene-1-sulfonamide (CAS 304912-75-2)
Recommended Standards
- 2-Nitrophenol-4-sulfomethylamide (CAS 96-58-2)
- 2-Fluoro-N-(2-nitrophenyl)aniline (CAS 28898-02-4)
- 2-Piperazin-1-yl-5-(trifluoromethyl)pyrimidine (CAS 745066-18-6)
- 2-[4-(2-Fluorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetonitrile (CAS 860784-78-7)
- N-Carnosyl histidine HCl (CAS 2295920-97-5(free base))
- 2,4-Dichloro-6-(4-methoxyphenyl)pyrimidine (CAS 163263-91-0)
- Tert-butyl (3-(thietan-3-ylamino)benzyl)carbamate (CAS 1994182-03-4)
- 3-Bromo-2-(3,3-difluoroazetidin-1-yl)nitrobenzene (CAS 1707358-03-9)
- 2-(5-Amino-4H-1,2,4-triazol-3-yl)-1-(pyrrolidin-1-yl)ethan-1-one (CAS 921225-15-2)
- (E)-4-((4-(Pentyloxy)benzylidene)amino)benzonitrile (CAS 37075-25-5)
- 1-(3,4-Dimethylphenyl)-4,4,4-trifluorobutane-1,3-dione (CAS 63458-99-1)
- 1-[2-(2-Aminoethoxy)ethyl]pyrrole-2,5-dione (CAS 131274-16-3)
- 3-Amino-4-hydroxy-1H-pyrazolo[4,3-c]pyridine-7-carboxylic acid (CAS 120581-76-2)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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