Methyl 4-Bromo-5-(chlorosulfonyl)thiophene-2-carboxylate CAS 1306606-67-6
| CAS No. | 1306606-67-6 |
| Molecular Formula | C6H4BrClO4S2 |
| Molecular Weight | 319.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Methyl 4-Bromo-5-(chlorosulfonyl)thiophene-2-carboxylate (C6H4BrClO4S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine 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 319.58 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Methyl 4-Bromo-5-(chlorosulfonyl)thiophene-2-carboxylate (CAS 1306606-67-6) is a high-purity analytical reference standard with the molecular formula C6H4BrClO4S2 and a molecular weight of 319.58 g/mol.
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.
CATO manufactures Methyl 4-Bromo-5-(chlorosulfonyl)thiophene-2-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H4BrClO4S2 |
| Molecular Weight | 319.58 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| 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.) | 1990 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 2 |
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Recommended Standards
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- Resmetirom impurity 63 (CAS CATO-C4X-291263)
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