Methyl 2-(chlorosulfonyl)-3-methylbenzoate CAS 126535-26-0
| CAS No. | 126535-26-0 |
| Molecular Formula | C9H9ClO4S |
| Molecular Weight | 248.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Methyl 2-(chlorosulfonyl)-3-methylbenzoate (CAS 126535-26-0), a certified reference material (molecular formula C9H9ClO4S, MW 248.68 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H9ClO4S, Methyl 2-(chlorosulfonyl)-3-methylbenzoate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.68 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).
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 | C9H9ClO4S |
| Molecular Weight | 248.68 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 4-(Chlorosulfonyl)phenyl propionate (CAS 1029717-21-2)
- Ethyl 2-(chlorosulfonyl)benzoate (CAS 103008-54-4)
- 4-Chlorosulfonyl-benzoic acid ethyl ester (CAS 10486-51-8)
- Methyl 2-(chlorosulfonyl)-5-methylbenzoate (CAS 1153230-09-1)
- Methyl 3-(chlorosulfonyl)-5-methylbenzoate (CAS 1154149-31-1)
- 4-Methyl-2-chlorosulfonyl-benzoic acid methyl ester, 97% (CAS 1188087-56-0)
- Methyl 4-((chlorosulfonyl)methyl)benzoate (CAS 130047-14-2)
- 4-[2-(Chlorosulfonyl)ethyl]benzoic acid (CAS 1314939-34-8)
Recommended Standards
- 2-(3-Chloro-4-(methylsulfonyl)phenyl)acetic acid (CAS 1265819-83-7)
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- 2-(4-Chlorophenyl)-1-(3-fluorophenyl)ethanone (CAS 1183554-70-2)
- Ethyl 4-hydroxy-2-oxo-1-phenyl-1,2-dihydro-1,8-naphthyridine-3-carboxylate (CAS 138305-20-1)
- 2-(1-Methylnaphthalen-2-yl)acetonitrile (CAS 96437-14-8)
- tert-Butyl (S)-(1-(3-bromo-5-fluorophenyl)-2-((N-methyl-2-nitrophenyl)sulfonamido)ethyl)carbamate (CAS 1715032-60-2)
- Topiramate Azidosulfate (CAS 106881-35-0)
- [5-(4-Fluorophenoxy)-1-methyl-3-phenyl-1H-pyrazol-4-yl]methyl 3-(trifluoromethyl)benzoate (CAS 956262-56-9)
- Favipiravir-13C3 (CAS CATO-CCAD303706)
- 2-Ethyl-N-((1-(3-fluorophenyl)-1H-tetrazol-5-yl)methyl)butanamide (CAS 921166-90-7)
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- (2S)-2-amino-3-(4-hydroxyphenyl)-2-methylpropanoic acid (CAS 672-87-7)
- Glucagon-like peptide 2 (CAS 89750-15-2)
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