Methyl 4-(chlorosulfonyl)thiophene-2-carboxylate CAS 97272-03-2
| CAS No. | 97272-03-2 |
| 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 Methyl 4-(chlorosulfonyl)thiophene-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl 4-(chlorosulfonyl)thiophene-2-carboxylate (CAS 97272-03-2) is a high-purity analytical reference standard with the molecular formula C6H5ClO4S2 and a molecular weight of 240.68 g/mol.
Structurally, Methyl 4-(chlorosulfonyl)thiophene-2-carboxylate (C6H5ClO4S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 240.68 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.) | 1984 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Methyl Standards
- 5-(Chlorosulfonyl)-3-methylthiophene-2-carboxylic acid (CAS 1114823-93-6)
- 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-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)
Recommended Standards
- Methyl 3-(4-chlorophenyl)-2,3-dimethyloxirane-2-carboxylate (CAS 99334-05-1)
- Methyl 2-(2-chlorobenzyl)-3-oxobutanoate (CAS 676348-55-3)
- Methyl 5-(4-chlorophenyl)-5-oxopentanoate (CAS 71354-29-5)
- Ethyl 8-chlorochromane-3-carboxylate (CAS 2109627-60-1)
- 4-(4-(m-Tolyl)-1H-pyrazol-3-yl)-4H-1,2,4-triazole (CAS 62538-00-5)
- 4,5-Dichloro-2-methylthieno[2,3-d]pyrimidine (CAS 137287-40-2)
- 4-Bromo-N-butyl-5-ethoxy-2-nitroaniline (CAS 1280786-89-1)
- 1-(Pyrimidin-4-yl)propan-2-one (CAS 354812-00-3)
- 2-Phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 90019-56-0)
- Ethane-1,1,2-tricarboxylic acid (CAS 922-84-9)
- 2-(2-Bromophenyl)-N-methylacetamide (CAS 141438-47-3)
- tert-Butyl ((1-(2-aminoethyl)pyrrolidin-2-yl)methyl)(isopropyl)carbamate (CAS 1353943-39-1)
- (2,4-Dihydroxyphenyl)dimethylsulfonium trifluoromethanesulfonate (CAS 180787-54-6)
- Liraglutide(10-22)TFA Salt (CAS CATO-C4X-199211)
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