4-Bromo-3-chlorothiophene-2-carboxylic acid CAS 1401992-28-6
| CAS No. | 1401992-28-6 |
| Molecular Formula | C5H2BrClO2S |
| Molecular Weight | 241.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Bromo-3-chlorothiophene-2-carboxylic acid (CAS 1401992-28-6), a certified reference material (molecular formula C5H2BrClO2S, MW 241.49 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H2BrClO2S, 4-Bromo-3-chlorothiophene-2-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 241.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 4-Bromo-3-chlorothiophene-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 | 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.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 5-bromo-4-chloro-thiophene-2-carboxylic acid (CAS 123418-69-9)
- 2-Bromo-5-chlorothiophene-3-carboxylic acid (CAS 1379306-17-8)
- 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)
- 2,2,2-Trichloro-1-(1,3-dimethyl-1H-pyrazol-4-yl)ethanone (CAS 1306738-48-6)
- 3-Chloro-5-morpholinophenylboronic acid (CAS 2377607-81-1)
- 2,3,4,9-Tetrahydro-1H-carbazol-3-ol (CAS 14384-34-0)
- 1-Isobutyl-1h-imidazol-2-amine hydrochloride (CAS 1221722-63-9)
- 2-(2-Amino-3-fluorophenyl)acetic acid (CAS 1822659-63-1)
- 2-Bromo-1-(5-chlorofuran-2-yl)ethan-1-one (CAS 887588-42-3)
- 3-Bromo-5-chloro-4-hydroxybenzonitrile (CAS 1689-86-7)
- 2-(2-Cyanophenyl)-2-methylpropanoic acid (CAS 1314655-77-0)
- 1-(2-Methylpyrazolo[1,5-a]pyrazin-4-yl)-1H-pyrazole-3-carboxylic acid (CAS 1710674-95-5)
- Copper(II) 2-acetyl-4,6,7-tris[2-(methoxycarbonyl)ethyl]-1,3,5,8-tetramethylporphyrin (CAS 74822-29-0)
- Methyl 1-(3-bromophenyl)cyclopropane-1-carboxylate (CAS 749928-59-4)
- Fibrinopeptide A, human TFA (CAS 61533-47-9)
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