1-Methyl-6-nitro-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide CAS 94514-73-5
| CAS No. | 94514-73-5 |
| Molecular Formula | C8H8N2O4S |
| Molecular Weight | 228.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 228.23 g/mol gives 1-Methyl-6-nitro-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-Methyl-6-nitro-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide (CAS 94514-73-5) is a high-purity analytical reference standard with the molecular formula C8H8N2O4S and a molecular weight of 228.23 g/mol.
1-Methyl-6-nitro-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide (C8H8N2O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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).
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 | C8H8N2O4S |
| Molecular Weight | 228.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 1-Methyl-7-nitro-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide (CAS 189013-84-1)
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Recommended Standards
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- trans-Hexahydro-5H-[1,4]dioxino[2,3-c]pyrrole hydrochloride (CAS 2138065-53-7)
- 6-Bromo-4-(difluoromethyl)-5-(hydroxymethyl)picolinonitrile (CAS 1806997-80-7)
- Naproxen Impurity 29 (CAS 91059-47-1)
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- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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