4-Bromo-5-chlorofuran-2-carbonitrile CAS 31491-39-1
| CAS No. | 31491-39-1 |
| Molecular Formula | C5HBrClNO |
| Molecular Weight | 206.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 206.42 g/mol gives 4-Bromo-5-chlorofuran-2-carbonitrile distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Bromo-5-chlorofuran-2-carbonitrile (CAS 31491-39-1), molecular formula C5HBrClNO and molecular weight 206.42 g/mol, is a CATO reference standard with documented purity and traceability.
4-Bromo-5-chlorofuran-2-carbonitrile (C5HBrClNO) contains an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5HBrClNO |
| Molecular Weight | 206.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 4-Bromo-2-(chloromethyl)pyridine (CAS 1001463-32-6)
- 5-Bromo-4-chloro-2-methylpyridine (CAS 1003711-85-0)
- 2-Bromo-4-chloro-5-methylpyridine (CAS 1033203-40-5)
- 3-Bromo-4-(chloromethyl)pyridine (CAS 1060802-26-7)
- 4-Bromo-3-(chloromethyl)pyridine (CAS 1060808-80-1)
- 3-Bromo-4-chloro-2-methylpyridine (CAS 1188023-70-2)
- 4-Bromo-3-chloro-2-methylpyridine (CAS 1188140-52-4)
- 2-Bromo-4-chloro-6-methylpyridine (CAS 1206249-38-8)
Recommended Standards
- tert-Butyl-(Ethylsulfanylmethoxy)dimethylsilane (CAS 119451-79-5)
- 4-Chloronaphthalene-1-boronic Acid (CAS 147102-97-4)
- Diamyl Disulfide (CAS 112-51-6)
- 1,2-diethoxy-1,1,2,2-tetramethyldisilane (CAS 18419-84-6)
- Ethyl 3-(2-Pyridyl)propanoate (CAS 2739-74-4)
- Methyl 2-benzoyl-3,4,5,6-tetrachlorobenzoate (CAS 7335-83-3)
- 1,4-Bis(5-phenyl-2-oxazolyl)benzene (CAS 1806-34-4)
- 2-({8,9-dimethoxy-2-oxo-2H,3H-imidazo[1,2-c]quinazolin-5-yl}sulfanyl)acetonitrile (CAS 672949-31-4)
- 5-Bromo-4-(2,2-dimethoxy)ethyl-2-hydroxy-3-nitropyridine (CAS 1427504-38-8)
- (3-Bromo-2-isopropoxy-5-methylphenyl)boronic acid (CAS 870718-01-7)
- (S)-1-(Furan-2-yl)but-3-en-1-amine (CAS 219802-25-2)
- 4-(Cyclopentyl(methyl)amino)-1-methylpiperidine-4-carbonitrile (CAS 1110717-77-5)
- 2-Bromo-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzamide (CAS 896365-32-5)
- Peptide 433 (CAS CATO-CPTD788433)
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