Methyl 5-(chlorosulfonyl)thiophene-3-carboxylate CAS 69816-04-2
| CAS No. | 69816-04-2 |
| Molecular Formula | C6H5ClO4S2 |
| Molecular Weight | 240.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H5ClO4S2, Methyl 5-(chlorosulfonyl)thiophene-3-carboxylate 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Methyl 5-(chlorosulfonyl)thiophene-3-carboxylate (CAS 69816-04-2), molecular formula C6H5ClO4S2 and molecular weight 240.68 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Methyl 5-(chlorosulfonyl)thiophene-3-carboxylate 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 | 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.) | 1976 |
| 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-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 1-(chlorosulfonyl)cyclohexanecarboxylate (CAS 1312138-63-8)
- Methyl 2-(chlorosulfonyl)cyclohexane-1-carboxylate (CAS 1461715-54-7)
Recommended Standards
- Methyl 6-chloro-8-methylchromane-3-carboxylate (CAS 2106810-09-5)
- Methyl 5-(4-chlorophenyl)-5-oxopentanoate (CAS 71354-29-5)
- Methyl 8-chloro-5-methylchromane-3-carboxylate (CAS 2110018-00-1)
- tert-Butyl 2-(4-chlorophenyl)-2-oxoacetate (CAS 75716-85-7)
- Sodium 2-Iodobenzoate (CAS 2532-17-4)
- Meclizine Dihydrochloride Monohydrate (CAS 31884-77-2)
- 3-Chloro-n-[2-(methylsulfanyl)phenyl]propanamide (CAS 6397-38-2)
- 2-Amino-7-nitroacridin-9(10H)-one (CAS 65163-79-3)
- 5-Chloro-6-methoxynicotinaldehyde (CAS 132865-44-2)
- 2,5-Difluoro-4-hydroxy-N-(methylsulfonyl)benzamide (CAS 1354963-02-2)
- 4-(Isopropylamino)phthalazin-1-ol (CAS 69776-01-8)
- 2-(tert-Butoxy)-4-cyclopropoxy-3-isopropoxypyridine (CAS 1243317-12-5)
- (S)-2-Amino-N-isopropyl-N-((1-methylpiperidin-4-yl)methyl)propanamide (CAS 1354016-40-2)
- Antiarrhythmic peptide (cattle atrium) (CAS 81771-37-1)
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