5-(Chlorosulfonyl)-3-methylthiophene-2-carboxylic acid CAS 1114823-93-6
| CAS No. | 1114823-93-6 |
| Molecular Formula | C6H5ClO4S2 |
| Molecular Weight | 240.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 240.68 g/mol gives 5-(Chlorosulfonyl)-3-methylthiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-(Chlorosulfonyl)-3-methylthiophene-2-carboxylic acid (CAS 1114823-93-6), a certified reference material (molecular formula C6H5ClO4S2, MW 240.68 g/mol) for analytical method development and quality control.
Based on its molecular formula C6H5ClO4S2, 5-(Chlorosulfonyl)-3-methylthiophene-2-carboxylic acid 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 240.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C6H5ClO4S2 |
| Molecular Weight | 240.68 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, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Chlorosulfonyl Standards
- 4-(Chlorosulfonyl)-5-methylthiophene-2-carboxylic acid (CAS 1258651-16-9)
- 2-[5-(chlorosulfonyl)thiophen-2-yl]acetic acid (CAS 869709-90-0)
- Methyl 4-(chlorosulfonyl)thiophene-2-carboxylate (CAS 97272-03-2)
- Methyl 4-(chlorosulfonyl)thiophene-3-carboxylate (CAS 59337-85-8)
- Methyl 5-(chlorosulfonyl)thiophene-2-carboxylate (CAS 69816-03-1)
- Methyl 5-(chlorosulfonyl)thiophene-3-carboxylate (CAS 69816-04-2)
- Methyl 1-(chlorosulfonyl)cyclohexanecarboxylate (CAS 1312138-63-8)
- Methyl 2-(chlorosulfonyl)cyclohexane-1-carboxylate (CAS 1461715-54-7)
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