2,6-Dichloro-3,5-difluorocyclohexa-2,5-diene-1,4-dione CAS 2218-88-4

Purity 97%+In StockPharmaceutical Standards
CAS No.2218-88-4
Molecular FormulaC6Cl2F2O2
Molecular Weight212.97 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,6-Dichloro-3,5-difluorocyclohexa-2,5-diene-1,4-dione CAS 2218-88-4 chemical structure

Description

The occurrence of 2,6-Dichloro-3,5-difluorocyclohexa-2,5-diene-1,4-dione is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

2,6-Dichloro-3,5-difluorocyclohexa-2,5-diene-1,4-dione (CAS 2218-88-4), molecular formula C6Cl2F2O2 and molecular weight 212.97 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system, 2,6-Dichloro-3,5-difluorocyclohexa-2,5-diene-1,4-dione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 212.97 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).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 2,6-Dichloro-3,5-difluorocyclohexa-2,5-diene-1,4-dione 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 FormulaC6Cl2F2O2
Molecular Weight212.97 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; 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.)1957
Halogen ContentF/Cl-containing

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