4-Bromo-3-methylthiophene-2-carboxylic acid CAS 265652-39-9
| CAS No. | 265652-39-9 |
| Molecular Formula | C6H5BrO2S |
| Molecular Weight | 221.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 221.07 g/mol gives 4-Bromo-3-methylthiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Bromo-3-methylthiophene-2-carboxylic acid (CAS 265652-39-9), a certified reference material (molecular formula C6H5BrO2S, MW 221.07 g/mol) for analytical method development and quality control.
The molecular framework of 4-Bromo-3-methylthiophene-2-carboxylic acid (C6H5BrO2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 4-Bromo-3-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 | C6H5BrO2S |
| Molecular Weight | 221.07 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-5-methylthiazole-4-carboxamide (CAS 1025468-14-7)
- 2-bromo-N-methyl-thiazole-4-carboxamide (CAS 1092942-42-1)
- 4-Bromo-n'-hydroxythiophene-2-carboximidamide (CAS 1094456-19-5)
- 2-Bromo-4-methylthiazole-5-carboxamide (CAS 1254694-56-8)
- 5-Bromo-3-methoxythiophene-2-carbaldehyde (CAS 1258858-48-8)
- N-[(4-Bromo-2-thiazolyl)methyl]formamide (CAS 1279721-67-3)
- 5-Bromo-2-methylthiophene-3-carboxylic acid (CAS 1344027-40-2)
- 5-Bromo-N-methyl-2-thiazolecarboxamide (CAS 1414958-87-4)
Recommended Standards
- 3-Bromo-N'-hydroxythiophene-2-carboximidamide (CAS 478489-75-7)
- 4-Bromo-5-methoxythiophene-2-carbaldehyde (CAS 77133-21-2)
- 3-Bromo-5-methylthiophene-2-carboxylic Acid (CAS 61285-29-8)
- 4-Bromo-N-methylthiazole-2-carboxamide (CAS 959755-98-7)
- 1-Naphthyl N-propylcarbamate (CAS 25216-27-7)
- (Pentafluoroethyl)diphenylphosphine (CAS 20157-74-8)
- 2’,6’-Dichloro-2-hydroxyacetophenone (CAS 688361-22-0)
- 5-(Bromomethyl)-2,4-dichloropyrimidine (CAS 1289387-92-3)
- 3-Bromo-2,6-difluoro-5-methylphenylboronic acid (CAS 2377610-05-2)
- 3-(4-Ethylpiperazin-1-yl)-3-oxopropanenitrile (CAS 379726-06-4)
- (6-Oxaspiro[2.5]Octan-1-yl)methanamine (CAS 1339128-10-7)
- N-(2-(tert-Butyl)phenyl)-2-((3-ethyl-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 579443-11-1)
- (3R,5S)-3,5-difluoropiperidine (CAS 259110-62-8)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
Why CATO?
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