2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid CAS 1171731-28-4

Purity 97%+In StockPharmaceutical Standards
CAS No.1171731-28-4
Molecular FormulaC7H5F4N3O4
Molecular Weight271.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid CAS 1171731-28-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 271.13 g/mol gives 2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid (CAS 1171731-28-4) is a high-purity analytical reference standard with the molecular formula C7H5F4N3O4 and a molecular weight of 271.13 g/mol.

2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid (C7H5F4N3O4) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine 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. 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), 2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid 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 FormulaC7H5F4N3O4
Molecular Weight271.13 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 sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay 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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1989
Halogen ContentF-containing
Nitrogen Atoms3

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