3-Bromothiophene-2-carboxylic Acid CAS 7311-64-0
| CAS No. | 7311-64-0 |
| Molecular Formula | C5H3BrO2S |
| Molecular Weight | 207.05 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 3-Bromothiophene-2-carboxylic Acid.
3-Bromothiophene-2-carboxylic Acid (CAS 7311-64-0), molecular formula C5H3BrO2S and molecular weight 207.05 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H3BrO2S, 3-Bromothiophene-2-carboxylic Acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 207.05 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Bromothiophene-2-carboxylic Acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H3BrO2S |
| Molecular Weight | 207.05 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.) | 1959 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromothiophene Standards
- (E)-5-bromothiophene-3-carbaldehyde oxime (CAS 18791-96-3)
- 5-Bromothiophene-3-carboxamide (CAS 189329-94-0)
- 2-Bromothiophene-3-carboxamide (CAS 189330-06-1)
- (E)-4-bromothiophene-2-carbaldehyde oxime (CAS 31767-01-8)
- 3-Bromothiophene-2-carboxamide (CAS 78031-18-2)
- 4-Bromothiophene-2-carboxamide (CAS 83933-17-9)
- 5-Bromothiophene-2-carboxaldehyde oxime (CAS 2160-63-6)
- 4-Bromothiophene-2-carboximidamide (CAS 1094293-83-0)
Recommended Standards
- 3,5-Dichloro-p-anisyl alcohol (CAS 4892-23-3)
- 4,5-Dichloroveratrole (CAS 2772-46-5)
- 3,5-Dichloro-4-ethoxyphenol (CAS 89748-18-5)
- 4-Bromothiazole-2-carboxamide (CAS 912639-91-9)
- methyl 3-ethynylbicyclo[1.1.1]pentane-1-carboxylate (CAS 1955554-75-2)
- N-((1-Cyclopentylpiperidin-4-yl)methyl)-4-propylbenzenesulfonamide (CAS 953259-56-8)
- 2,3-Bis(4-hydroxyphenyl)propionitrile (CAS 1428-67-7)
- 1-(2-Ethyltetrahydro-2h-pyran-4-yl)ethan-1-amine (CAS 1559541-94-4)
- 3-Amino-N-(2-ethyl-6-methylphenyl)benzamide (CAS 1016751-51-1)
- (4-Hydroxy-3-methoxyphenyl)boronic acid (CAS 182344-21-4)
- N-(4-butylphenyl)-2-(3,4-dihydroquinolin-1(2H)-yl)acetamide (CAS 868256-38-6)
- 3-((6-Methoxy-1H-benzo[d]imidazol-2-yl)amino)propan-1-ol (CAS 221014-03-5)
- Dimethyl-1,3-thiazole-5-carboxamide (CAS 66806-33-5)
- Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 75976-10-2)
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