4-Bromo-5-cyclopropyl-3-(trifluoromethyl)-1H-pyrazole CAS 1057659-72-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1057659-72-9
Molecular FormulaC7H6BrF3N2
Molecular Weight255.04 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Bromo-5-cyclopropyl-3-(trifluoromethyl)-1H-pyrazole CAS 1057659-72-9 chemical structure

Description

The molecular framework of 4-Bromo-5-cyclopropyl-3-(trifluoromethyl)-1H-pyrazole (C7H6BrF3N2) is characterized by a nitrile group, fluorine/bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

4-Bromo-5-cyclopropyl-3-(trifluoromethyl)-1H-pyrazole (CAS 1057659-72-9) is a high-purity analytical reference standard with the molecular formula C7H6BrF3N2 and a molecular weight of 255.04 g/mol.

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-5-cyclopropyl-3-(trifluoromethyl)-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 FormulaC7H6BrF3N2
Molecular Weight255.04 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1988
Halogen ContentF/Br-containing
Nitrogen Atoms2

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