1-(2,4-Difluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one CAS 90208-65-4

Purity 97%+In StockPharmaceutical Standards
CAS No.90208-65-4
Molecular FormulaC9H7F2N3O
Molecular Weight211.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(2,4-Difluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one CAS 90208-65-4 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(2,4-Difluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one.

1-(2,4-Difluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one (CAS 90208-65-4), molecular formula C9H7F2N3O and molecular weight 211.17 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 1-(2,4-Difluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 211.17 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), 1-(2,4-Difluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one 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 FormulaC9H7F2N3O
Molecular Weight211.17 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1982
Halogen ContentF-containing
Nitrogen Atoms3

Related Difluorophenyl Standards

Recommended Standards

Why CATO?