2-(2,4-Difluorophenyl)isothiazol-3(2H)-one CAS 951900-41-7

Purity 97%+In StockPharmaceutical Standards
CAS No.951900-41-7
Molecular FormulaC9H5F2NOS
Molecular Weight213.20 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(2,4-Difluorophenyl)isothiazol-3(2H)-one CAS 951900-41-7 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 2-(2,4-Difluorophenyl)isothiazol-3(2H)-one.

2-(2,4-Difluorophenyl)isothiazol-3(2H)-one (CAS 951900-41-7) is a high-purity analytical reference standard with the molecular formula C9H5F2NOS and a molecular weight of 213.20 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution, 2-(2,4-Difluorophenyl)isothiazol-3(2H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 213.20 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), 2-(2,4-Difluorophenyl)isothiazol-3(2H)-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 FormulaC9H5F2NOS
Molecular Weight213.20 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
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.)1987
Halogen ContentF-containing
Nitrogen Atoms1
Sulfur Atoms1

Related Difluorophenyl Standards

Recommended Standards

Why CATO?