4-Bromo-5-chlorothiophene-2-sulfonyl chloride CAS 166964-35-8
| CAS No. | 166964-35-8 |
| Molecular Formula | C4HBrCl2O2S2 |
| Molecular Weight | 295.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-5-chlorothiophene-2-sulfonyl chloride.
4-Bromo-5-chlorothiophene-2-sulfonyl chloride (CAS 166964-35-8) is a high-purity analytical reference standard with the molecular formula C4HBrCl2O2S2 and a molecular weight of 295.99 g/mol.
Structurally, 4-Bromo-5-chlorothiophene-2-sulfonyl chloride (C4HBrCl2O2S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 295.99 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.
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 4-Bromo-5-chlorothiophene-2-sulfonyl chloride 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 | C4HBrCl2O2S2 |
| Molecular Weight | 295.99 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 2 |
Related Bromo Standards
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Why CATO?
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