3-(Bromoethynyl)pyridine CAS 218431-38-0
| CAS No. | 218431-38-0 |
| Molecular Formula | C7H4BrN |
| Molecular Weight | 182.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-(Bromoethynyl)pyridine (CAS 218431-38-0), a certified reference material (molecular formula C7H4BrN, MW 182.02 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H4BrN, 3-(Bromoethynyl)pyridine contains a nitrile group, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 182.02 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H4BrN |
| Molecular Weight | 182.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromoethynyl Standards
- (Bromoethynyl)trimethylsilane (CAS 18243-59-9)
- (Bromoethynyl)benzene 1-Bromo-2-phenylacetylene 1-Bromo-2-phenylethyne 932-87-6 Phenylethynyl bromide (CAS 932-87-6)
- 4-(2-bromoethynyl)-1-methyl-pyrazole (CAS 2737342-90-2)
- 2-(Bromoethynyl)furan (CAS 333952-15-1)
- 1-(Bromoethynyl)-2-fluorobenzene (CAS 1246224-44-1)
- 1-(Bromoethynyl)cyclohexan-1-ol (CAS 13957-27-2)
- 1-(Bromoethynyl)-3-chlorobenzene (CAS 934001-82-8)
- 1-(Bromoethynyl)-4-chlorobenzene (CAS 33491-03-1)
Recommended Standards
- 2-Bromo-N-ethoxyacetamide (CAS 402831-81-6)
- 3-Bromo-2-ethynylpyridine (CAS 96439-99-5)
- 2-Bromo-6-ethynylpyridine (CAS 445468-63-3)
- 3-Bromo-5-ethynylpyridine (CAS 866683-52-5)
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- (3-((5-(Trifluoromethyl)pyridin-2-yl)oxy)phenyl)methanol (CAS 1020325-22-7)
- Endo-Pro36-Tirzepatide (CAS CATO-CPTD788688)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com