4,7-Dimethylbenzo[d]isothiazole CAS 1427433-53-1
| CAS No. | 1427433-53-1 |
| Molecular Formula | C9H9NS |
| Molecular Weight | 163.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4,7-Dimethylbenzo[d]isothiazole (CAS 1427433-53-1) is a high-purity analytical reference standard with the molecular formula C9H9NS and a molecular weight of 163.24 g/mol.
Based on its molecular formula C9H9NS, 4,7-Dimethylbenzo[d]isothiazole contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 163.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a certified reference material (CRM), 4,7-Dimethylbenzo[d]isothiazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H9NS |
| Molecular Weight | 163.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dimethylbenzo Standards
- 3,7-Dimethylbenzo[d]isothiazole (CAS 110718-88-2)
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- 5,6-Dimethylbenzo[d]isothiazole (CAS 1427396-23-3)
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