4-Bromo-2,3-dichloropyridine CAS 1020717-98-9
| CAS No. | 1020717-98-9 |
| Molecular Formula | C5H2BrCl2N |
| Molecular Weight | 226.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Bromo-2,3-dichloropyridine is closely related to a nitrile group, chlorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Bromo-2,3-dichloropyridine (CAS 1020717-98-9), a certified reference material (molecular formula C5H2BrCl2N, MW 226.89 g/mol) for analytical method development and quality control.
Owing to a nitrile group, chlorine/bromine substitution, 4-Bromo-2,3-dichloropyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 226.89 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C5H2BrCl2N |
| Molecular Weight | 226.89 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 3-Bromo-4,5-dichloropyridine (CAS 1001056-83-2)
- 2-Bromo-4,5-dichloropyridine (CAS 1033203-42-7)
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- 3-Bromo-2,4-dichloropyridine (CAS 144584-32-7)
Recommended Standards
- 4,5-Dibromo-2H-1,2,3-triazole (CAS 22300-52-3)
- (E)-(3-Bromostyryl)boronic acid (CAS 943341-66-0)
- 4,5-Dibromo-1H-1,2,3-triazole (CAS 15294-81-2)
- Tetravinyl tin (CAS 1112-56-7)
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- 1-Butyl-3-(3-methoxyphenyl)thiourea (CAS 22244-35-5)
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- Ethyl 5-(phenylamino)-1H-1,2,3-triazole-4-carboxylate (CAS 62469-98-1)
- 4-(tert-Butoxy)-2,5-difluoro-3-methylpyridine (CAS 169749-84-2)
- (S)-2,5-Dioxopyrrolidin-1-yl 2-(((benzyloxy)carbonyl)amino)-3-(4-(benzyloxy)phenyl)propanoate (CAS 52773-66-7)
- Benzyl 4-(oxetan-3-ylamino)piperidine-1-carboxylate (CAS 1349716-51-3)
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- 6,7,8,9-tetrahydro-5H-benzo[7]annulen-2-amine hydrochloride (CAS 51490-17-6)
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