methyl 5-(chlorosulfonyl)-2-fluoro-4-methylbenzoate CAS 1539059-45-4
| CAS No. | 1539059-45-4 |
| Molecular Formula | C9H8ClFO4S |
| Molecular Weight | 266.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), methyl 5-(chlorosulfonyl)-2-fluoro-4-methylbenzoate 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.
CATO supplies methyl 5-(chlorosulfonyl)-2-fluoro-4-methylbenzoate (CAS 1539059-45-4), a certified reference material (molecular formula C9H8ClFO4S, MW 266.67 g/mol) for analytical method development and quality control.
Structurally, methyl 5-(chlorosulfonyl)-2-fluoro-4-methylbenzoate (C9H8ClFO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 266.67 g/mol, it falls into the medium-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H8ClFO4S |
| Molecular Weight | 266.67 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.) | 1992 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
Related methyl Standards
- ethyl 4-(chlorosulfonyl)-3-fluorobenzoate (CAS 1063734-43-9)
- Ethyl 3-(chlorosulfonyl)-5-fluorobenzoate (CAS 1154154-93-4)
- Methyl 3-(chlorosulfonyl)-5-fluoro-4-methylbenzoate (CAS 1155083-93-4)
- ethyl 3-(chlorosulfonyl)-4-fluorobenzoate (CAS 1155084-23-3)
- Ethyl 5-(chlorosulfonyl)-2-fluorobenzoate (CAS 1155985-73-1)
- Methyl 3-(chlorosulfonyl)-4-fluoro-5-methylbenzoate (CAS 1341513-45-8)
- ethyl 2-(chlorosulfonyl)-5-fluorobenzoate (CAS 1461706-64-8)
- methyl 5-(chlorosulfonyl)-4-fluoro-2-methylbenzoate (CAS 1566997-25-8)
Recommended Standards
- 1-(4-Chlorophenyl)-2-(3,4-difluorophenyl)ethan-1-one (CAS 1373156-53-6)
- Methyl 2-((5-chloro-2-fluorophenyl)sulfonyl)acetate (CAS 1779133-08-2)
- 8-Chloro-3-(methylthio)-6-(trifluoromethyl)imidazo[1,5-a]pyridine (CAS 1823188-26-6)
- 1-(4-chlorophenyl)-2-(2,4-difluorophenyl)ethanone (CAS 1271611-27-8)
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- 3-(Prop-2-yn-1-yloxy)benzothioamide (CAS 1193389-35-3)
- Octahydrocyclopenta[c]pyrrole-4-carboxylic acid hydrochloride (CAS 2580200-85-5)
- 2,6-Dichloro-4-nitrobenzene-1-sulfonyl chloride (CAS 74875-17-5)
- Methyl 2-amino-3-(3,4,5-trimethyl-1h-pyrazol-1-yl)propanoate (CAS 1249026-37-6)
- Benidipine Impurity 57 (CAS 49840-66-6)
- 2-(4-(Aminomethyl)-3-(difluoromethyl)-6-iodopyridin-2-yl)acetonitrile (CAS 1805430-68-5)
- 5-(2-(Benzo[d]thiazol-2-yl)ethyl)-1,3,4-oxadiazole-2-thiol (CAS 1283108-44-0)
- Methyl 2-(1-(cyclohexylcarbamoyl)-3-oxodecahydroquinoxalin-2-yl)acetate (CAS 1008658-33-0)
- Semaglutide impurity 206 (CAS CATO-C4X-2226206)
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