1-Methyl-1,3-dihydrobenzo[c]isothiazole-6-carboxylic acid 2,2-dioxide CAS 2866498-37-3
| CAS No. | 2866498-37-3 |
| Molecular Formula | C9H9NO4S |
| Molecular Weight | 227.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 1-Methyl-1,3-dihydrobenzo[c]isothiazole-6-carboxylic acid 2,2-dioxide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 227.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 1-Methyl-1,3-dihydrobenzo[c]isothiazole-6-carboxylic acid 2,2-dioxide (CAS 2866498-37-3), a certified reference material (molecular formula C9H9NO4S, MW 227.24 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 1-Methyl-1,3-dihydrobenzo[c]isothiazole-6-carboxylic acid 2,2-dioxide 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 | C9H9NO4S |
| Molecular Weight | 227.24 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.) | 2003 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 1,3-dihydrobenzo[c]isothiazole-6-carboxylate 2,2-dioxide (CAS 1455471-64-3)
- 2,3-Dihydrobenzo[g]quinoline-4,5,10(1H)-trione (CAS 6566-47-8)
- 3-Oxo-2,3-dihydrobenzo[d]isothiazole-5-carboxylic acid 1,1-dioxide (CAS 221446-00-0)
- 3-Oxo-2,3-dihydrobenzo[d]isothiazole-6-carboxylic acid 1,1-dioxide (CAS 90779-46-7)
- 2,3-Dihydrobenzo[b][1,4]oxathiine-2-carboxylic acid 4,4-dioxide (CAS 1251923-88-2)
- 5-Methyl-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid 1,1-dioxide (CAS 1893315-30-4)
- Methyl 1,3-dihydrobenzo[c]thiophene-5-carboxylate 2,2-dioxide (CAS 893566-62-6)
- 2-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)pyridin-3-amine (CAS 1368415-98-8)
Recommended Standards
- 1,3-Dimethyl-5-(methylsulfonyl)-1H-pyrazolo[4,3-e][1,2,4]triazine (CAS 871253-78-0)
- 1-Nitro-3-(prop-2-ene-1-sulfonyl)benzene (CAS 3729-41-7)
- 1-(5-Methyl-1,3,4-thiadiazol-2-yl)-5-oxopyrrolidine-3-carboxylic acid (CAS 944511-42-6)
- 2-((2-Carboxyethyl)Thio)Nicotinic Acid (CAS 286472-02-4)
- 4-(4-Hydroxypiperidin-1-yl)benzimidamide (CAS 887577-50-6)
- 1-Chloroethyl Isobutyrate (CAS 84674-32-8)
- 3-Phenoxypropanehydrazide (CAS 95885-09-9)
- Methyl (R)-3-amino-3-(3,5-dibromophenyl)propanoate (CAS 1213961-64-8)
- Dibutyl 2-aminosuccinate (CAS 2885-11-2)
- 2-(Tert-butyl) 5-methyl (1S,4R,5R)-2-azabicyclo[2.2.1]Heptane-2,5-dicarboxylate (CAS 2382587-59-7)
- (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(naphthalen-1-yl)propanoic acid (CAS 507472-10-8)
- 3-Methyl-4-(methylamino)benzonitrile (CAS 69619-16-5)
- Cephapirin Benzathine (CAS 97468-37-6)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
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