2-Bromo-5-chlorothiophene CAS 2873-18-9
| CAS No. | 2873-18-9 |
| Molecular Formula | C4H2BrClS |
| Molecular Weight | 197.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Bromo-5-chlorothiophene (CAS 2873-18-9), a certified reference material (molecular formula C4H2BrClS, MW 197.48 g/mol) for analytical method development and quality control.
Based on its molecular formula C4H2BrClS, 2-Bromo-5-chlorothiophene contains sulfur-containing functionality, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 197.48 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).
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), 2-Bromo-5-chlorothiophene 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 | C4H2BrClS |
| Molecular Weight | 197.48 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-3-chlorothiophene (CAS 77893-68-6)
- 2-Bromo-4-chlorothiophene (CAS 32431-92-8)
- 3-Bromo-2-chlorothiophene (CAS 40032-73-3)
- 3-Bromo-4-chlorothiophene (CAS 36155-88-1)
- 2-Bromo-2-cyclopropylacetyl chloride (CAS 1010802-72-8)
- 2-bromo-1-(1-chlorocyclopropyl)ethanone (CAS 1215365-72-2)
- 3-Bromo-5-(chloromethyl)-1,2,4-oxadiazole (CAS 121562-12-7)
- 5-Bromo-3-(chloromethyl)-1,2,4-oxadiazole (CAS 155742-36-2)
Recommended Standards
- 1,2-Dichloroethane-1-sulfonyl chloride (CAS 84501-81-5)
- 2,4-Dichlorobenzyl Chloride-d2 (CAS 1246817-90-2)
- 1-bromocyclobutanecarbonyl chloride (CAS 70339-23-0)
- 4-Chloro-1-(difluoromethyl)-3-nitro-1h-pyrazole (CAS 1245773-01-6)
- 1-Benzyl 2-methyl (2R,4R)-4-hydroxy-2-methylpyrrolidine-1,2-dicarboxylate (CAS 2306247-06-1)
- (S)-3-Amino-4-(4-fluorophenyl)butanoic acid hydrochloride (CAS 331763-68-9)
- 2,2,6-trimethylmorpholine (CAS 113889-14-8)
- 3-Chloro-N-propylaniline (CAS 31084-60-3)
- 4-Methoxy-N-(2-methylpentyl)aniline (CAS 1040002-95-6)
- 5-Chloro-2-(cyclopropylmethyl)phenol (CAS 1227418-30-5)
- 1-(2-Amino-4-fluoro-5-methoxyphenyl)ethan-1-one (CAS 949159-97-1)
- 2,2'-(1,10-Phenanthroline-4,7-diyl)dibenzenesulfonic acid (CAS 98240-12-1)
- 4-Phenylnaphthalene-1,2-dione (CAS 73671-07-5)
- Peptide Impurity 15 (CAS 1227750-69-7)
Why CATO?
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