Methyl 5-(chlorosulfonyl)thiophene-2-carboxylate CAS 69816-03-1
| CAS No. | 69816-03-1 |
| Molecular Formula | C6H5ClO4S2 |
| Molecular Weight | 240.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 5-(chlorosulfonyl)thiophene-2-carboxylate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Methyl 5-(chlorosulfonyl)thiophene-2-carboxylate (CAS 69816-03-1), 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, Methyl 5-(chlorosulfonyl)thiophene-2-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. 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.
As a certified reference material (CRM), Methyl 5-(chlorosulfonyl)thiophene-2-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-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 5-(4-chlorophenyl)-5-oxopentanoate (CAS 71354-29-5)
- Methyl 6-chloro-8-methylchromane-3-carboxylate (CAS 2106810-09-5)
- Methyl 8-chloro-5-methylchromane-3-carboxylate (CAS 2110018-00-1)
- Methyl 3-(4-chlorophenyl)-2,3-dimethyloxirane-2-carboxylate (CAS 99334-05-1)
- 2-(Chloromethyl)-3-(difluoromethyl)-6-fluoropyridine-4-carboxylic acid (CAS 1805445-81-1)
- 5-(4-methylpiperidin-1-yl)-4-(tetrahydrofuran-2-ylmethyl)-4H-1,2,4-triazole-3-thiol (CAS 923254-10-8)
- 1-(4-Iodobutyl)-4-methoxybenzene (CAS 73515-08-9)
- 2,4-Dichloro-3-(chloromethyl)-6-methylpyridine (CAS 929974-97-0)
- 4,6-Diethoxypyrimidine-2(1H)-thione (CAS 155198-69-9)
- Venetoclax Impurity 22 (CAS CATO-C4X-249522)
- tert-Butyl 6-(difluoromethyl)-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2566880-11-1)
- (2-(2,3-Dimethoxyphenyl)cyclopropyl)methanamine (CAS 1267075-27-3)
- 6-Bromo-1,3-dimethyl-1H-pyrrolo[3,2-b]pyridine (CAS 2231676-56-3)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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