4-Bromo-1-(difluoromethyl)-5-(propoxymethyl)-1H-pyrazole CAS 1856061-76-1
| CAS No. | 1856061-76-1 |
| Molecular Formula | C8H11BrF2N2O |
| Molecular Weight | 269.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Bromo-1-(difluoromethyl)-5-(propoxymethyl)-1H-pyrazole (CAS 1856061-76-1) is a high-purity analytical reference standard with the molecular formula C8H11BrF2N2O and a molecular weight of 269.09 g/mol.
Owing to an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, 4-Bromo-1-(difluoromethyl)-5-(propoxymethyl)-1H-pyrazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 269.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 4-Bromo-1-(difluoromethyl)-5-(propoxymethyl)-1H-pyrazole 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 | C8H11BrF2N2O |
| Molecular Weight | 269.09 g/mol |
| Appearance | 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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