4-bromo-5-(chlorosulfonyl)thiophene-2-carboxylic acid CAS 1306604-23-8
| CAS No. | 1306604-23-8 |
| Molecular Formula | C5H2BrClO4S2 |
| Molecular Weight | 305.55 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-(chlorosulfonyl)thiophene-2-carboxylic acid.
CATO supplies 4-bromo-5-(chlorosulfonyl)thiophene-2-carboxylic acid (CAS 1306604-23-8), a certified reference material (molecular formula C5H2BrClO4S2, MW 305.55 g/mol) for analytical method development and quality control.
4-bromo-5-(chlorosulfonyl)thiophene-2-carboxylic acid (C5H2BrClO4S2) contains a carbohydrate-derived structure, a sulfone group, chlorine/bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 4-bromo-5-(chlorosulfonyl)thiophene-2-carboxylic acid 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 | C5H2BrClO4S2 |
| Molecular Weight | 305.55 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 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 2 |
Related bromo Standards
- ethyl 3-(3-bromo-4-chlorophenyl)-3-oxopropanoate (CAS 112704-82-2)
- Ethyl 3-(5-bromo-2-chlorophenyl)-3-oxopropanoate (CAS 1240570-51-7)
- Ethyl 3-(4-Bromo-2-chlorophenyl)-3-oxopropionate (CAS 131994-22-4)
- Ethyl 2-bromo-3-(4-chlorophenyl)-3-oxopropanoate (CAS 152559-46-1)
- 5-Bromo-4-(chlorosulfonyl)thiophene-2-carboxylic acid (CAS 172461-89-1)
- Ethyl 2-bromo-3-(3-chlorophenyl)-3-oxopropanoate (CAS 914220-11-4)
- 4-(5-Bromo-2-chloropyridine-3-carbonyl)morpholine (CAS 1251232-44-6)
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- 81988-89-8 UH11FDQ454 Ramoplanin A(sub 3) Ramoplanin A3 (S)-2-(3-Chloro-4-hydroxyphenyl)-N-(N(sup 2)-((2Z,4Z)-8-methyl-2,4-nonadienoyl)-(S)-asparaginyl-(2S,3S)-3-hydroxyasparaginyl-(R)-2-(p-hydroxyphenyl)glycyl-(R)-ornithyl-(2R,3R)-allothreonyl-2-(p-hydroxyphenyl)glycyl-2-(p-hydroxyphenyl)glycyl-(2S,3S)-allothreonyl-(S)-phenylalanyl-(R)-ornithyl-(S)-2-(p-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycyl-(2R,3R)-allothreonyl-(S)-2-(p-hydroxyphenyl)glycylglycyl-(S)-leucyl-(R)-alanyl)glycine psi1-lactone Ramoplanin A 1 (peptide moiety), 1-(N(sup 2)-methyl-1-oxo-2,4-nonadienyl)-L-asparagine)-11-(L-2-(4-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycine)-, (Z,Z)- UNII-UH11FDQ454 (CAS 81988-89-8)
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