4-bromo-5-methylthiophene-2-carboxylic acid CAS 29421-99-6
| CAS No. | 29421-99-6 |
| Molecular Formula | C6H9BrO2S |
| Molecular Weight | 225.10 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-methylthiophene-2-carboxylic acid.
CATO supplies 4-bromo-5-methylthiophene-2-carboxylic acid (CAS 29421-99-6), a certified reference material (molecular formula C6H9BrO2S, MW 225.10 g/mol) for analytical method development and quality control.
4-bromo-5-methylthiophene-2-carboxylic acid (C6H9BrO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. 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. 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-methylthiophene-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 | C6H9BrO2S |
| Molecular Weight | 225.10 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 | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related bromo Standards
- 2-(5-bromo-3-thienyl)acetic acid (CAS 1057217-28-3)
- 5-bromo-3-methyl-thiophene-2-carboxylic acid (CAS 38239-45-1)
- 5-bromo-4-methyl-thiophene-2-carboxylic acid (CAS 54796-53-1)
- 3-Bromo-5,7-dimethyl-1H-indazole (CAS 1000341-11-6)
- 5-Bromo-3,7-dimethyl-1H-indazole (CAS 1031417-71-6)
- 3-Bromo-4,5-dimethyl-1H-pyrrolo[2,3-b]pyridine (CAS 1082040-66-1)
- 6-Bromo-1,3-dimethyl-1H-indazole (CAS 1095539-84-6)
- 5-Bromo-6-propylpicolinonitrile (CAS 1149593-21-4)
Recommended Standards
- 4,6-Dichloro-5-methoxy-2-(methylthio)pyrimidine (CAS 49668-65-7)
- 4-(bromomethyl)-2-fluoro-1-methoxybenzene (CAS 331-61-3)
- 2-Fluoro-5-nitro-4-(trifluoromethyl)phenol (CAS 863983-96-4)
- 1-(2,4-Dichloro-5-fluorophenyl)ethane-1-thiol (CAS 1183717-04-5)
- 2-(6-Cyano-4-formylpyridin-2-yl)acetic acid (CAS 1393530-16-9)
- N-Methyl-N-(6-(methylamino)acridin-3-yl)acetamide (CAS 90145-63-4)
- [1-methyl-3-(trifluoromethyl)-1h-pyrazol-5-yl]methanol (CAS 949898-58-2)
- Afatinib Impurity 35 (CAS 848133-35-7)
- 3-Benzyl-N-methyl-3-azabicyclo[3.1.0]Hexan-6-amine dihydrochloride (CAS 1956384-80-7)
- 2-Amino-6-((perfluoroethyl)thio)benzonitrile (CAS 1159512-51-2)
- (S)-2-Amino-N-cyclopropyl-N-((3-methoxypyrazin-2-yl)methyl)-3-methylbutanamide (CAS 1353997-29-1)
- 2-Phenoxytetrahydrofuran (CAS 40324-40-1)
- Tert-butyl 8-amino-4,4-difluoro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2306275-45-4)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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