5-bromo-4-chloro-thiophene-2-carboxylic acid CAS 123418-69-9
| CAS No. | 123418-69-9 |
| Molecular Formula | C5H2BrClO2S |
| Molecular Weight | 241.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-bromo-4-chloro-thiophene-2-carboxylic acid (CAS 123418-69-9), molecular formula C5H2BrClO2S and molecular weight 241.49 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-bromo-4-chloro-thiophene-2-carboxylic acid (C5H2BrClO2S) 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 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 241.49 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-bromo-4-chloro-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 | C5H2BrClO2S |
| Molecular Weight | 241.49 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related bromo Standards
- 2-Bromo-5-chlorothiophene-3-carboxylic acid (CAS 1379306-17-8)
- 4-Bromo-3-chlorothiophene-2-carboxylic acid (CAS 1401992-28-6)
- 3-Bromo-5-chlorothiophene-2-carboxylic acid (CAS 60729-38-6)
- 4-Bromo-5-chlorothiophene-2-carboxylic Acid (CAS 60729-37-5)
- 5-Bromo-3-chlorothiophene-2-carboxylic acid (CAS 842135-76-6)
- 6-bromo-1-chloro-naphthalene (CAS 1000391-24-1)
- 4-Bromo-3-chloro-2-fluorothiophenol (CAS 1160574-65-1)
- 4-Bromo-2-chloro-6-fluorobenzenethiol (CAS 1208074-77-4)
Recommended Standards
- 2,6-Di-tert-butyl-4-methylphenol D21 (CAS 64502-99-4)
- 4-Chloro-2-morpholinophenylboronic acid (CAS 2096337-81-2)
- 3-Chloro-5-morpholinophenylboronic acid (CAS 2377607-81-1)
- 3-Chloro-4-(N-isopropylcarbamoyl)phenylboronic acid (CAS 850589-41-2)
- 5-Isopropyl-3-phenyl-7-(piperidin-1-yl)pyrazolo[1,5-a]pyrimidine (CAS 890628-46-3)
- 3-(4-Aminopiperidin-1-yl)-1-methyl-1,2-dihydropyrazin-2-one hydrochloride (CAS 1638612-80-2)
- 4-[(4-Bromophenoxy)methyl]pyridine (CAS 1016783-69-9)
- 2,6-Dimethyldithieno[3,2-b:2',3'-d]thiophene (CAS 533930-12-0)
- N-((1H-benzo[d][1,2,3]triazol-1-yl)methyl)-4-methylbenzenesulfonamide (CAS 188564-46-7)
- 1-Methylspiro[indoline-3,4'-piperidin]-2-one (CAS 67677-81-0)
- 3-(n-(1-(Tert-butoxycarbonyl)piperidin-4-yl)sulfamoyl)benzoic acid (CAS 1233958-41-2)
- Polyvinylsulfuric acid potassium salt, approx. M.W. 175,000 (CAS 26837-42-3)
- 4-(4-Bromophenoxy)benzene-1-sulfonyl chloride (CAS 61405-25-2)
- (Leu31,Pro3?)-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 132699-73-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com