3-Chloro-5-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde CAS 154357-44-5

Purity 97%+In StockPharmaceutical Standards
CAS No.154357-44-5
Molecular FormulaC5H2ClF3N2O
Molecular Weight198.53 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Chloro-5-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde CAS 154357-44-5 chemical structure

Description

The occurrence of 3-Chloro-5-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde is closely related to an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3-Chloro-5-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde (CAS 154357-44-5) is a high-purity analytical reference standard with the molecular formula C5H2ClF3N2O and a molecular weight of 198.53 g/mol.

Owing to an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, 3-Chloro-5-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 198.53 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).

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), 3-Chloro-5-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde 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 FormulaC5H2ClF3N2O
Molecular Weight198.53 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
CAS Registry Year (est.)2001
Halogen ContentF/Cl-containing
Nitrogen Atoms2

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