4-Bromo-3-cyano-5-(difluoromethyl)pyridine-2-sulfonyl chloride CAS 1806902-76-0
| CAS No. | 1806902-76-0 |
| Molecular Formula | C7H2BrClF2N2O2S |
| Molecular Weight | 331.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-3-cyano-5-(difluoromethyl)pyridine-2-sulfonyl chloride (CAS 1806902-76-0) is a high-purity analytical reference standard with the molecular formula C7H2BrClF2N2O2S and a molecular weight of 331.52 g/mol.
4-Bromo-3-cyano-5-(difluoromethyl)pyridine-2-sulfonyl chloride (C7H2BrClF2N2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine/bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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.
As a certified reference material (CRM), 4-Bromo-3-cyano-5-(difluoromethyl)pyridine-2-sulfonyl chloride 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 | C7H2BrClF2N2O2S |
| Molecular Weight | 331.52 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 4-Bromo-5-cyano-6-(difluoromethyl)pyridine-3-sulfonyl chloride (CAS 1804844-63-0)
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