1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-ol CAS 172834-79-6

Purity 97%+In StockPharmaceutical Standards
CAS No.172834-79-6
Molecular FormulaC5H5F3N2O
Molecular Weight166.10 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-ol CAS 172834-79-6 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 166.10 g/mol gives 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-ol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-ol (CAS 172834-79-6) is a high-purity analytical reference standard with the molecular formula C5H5F3N2O and a molecular weight of 166.10 g/mol.

The molecular framework of 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-ol (C5H5F3N2O) is characterized by an amide group, a hydroxyl group, an ether linkage, fluorine substitution. 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 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC5H5F3N2O
Molecular Weight166.10 g/mol
AppearanceWhite 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)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)2006
Halogen ContentF-containing
Nitrogen Atoms2

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