319-03-9 4-FLUOROBENZENE-1,2-DICARBOXYLIC ANHYDRIDE 4-FLUOROPHTHALIC ACID ANHYDRIDE 4-Fluorophthalic anhydride 5-FLUORO-1,3-DIHYDRO-2-BENZOFURAN-1,3-DIONE 5-FLUORO-1,3-ISOBENZOFURANDIONE 5-FLUORO-2-BENZOFURAN-1,3-DIONE 5-FLUOROISOBENZOFURAN-1,3-DIONE AS02025 CAS 319-03-9

Purity 97%+In StockPharmaceutical Standards
CAS No.319-03-9
Molecular FormulaC8H9FO3
Molecular Weight172.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

319-03-9 4-FLUOROBENZENE-1,2-DICARBOXYLIC ANHYDRIDE 4-FLUOROPHTHALIC ACID ANHYDRIDE 4-Fluorophthalic anhydride 5-FLUORO-1,3-DIHYDRO-2-BENZOFURAN-1,3-DIONE 5-FLUORO-1,3-ISOBENZOFURANDIONE 5-FLUORO-2-BENZOFURAN-1,3-DIONE 5-FLUOROISOBENZOFURAN-1,3-DIONE AS02025 CAS 319-03-9 chemical structure

Description

319-03-9 4-FLUOROBENZENE-1,2-DICARBOXYLIC ANHYDRIDE 4-FLUOROPHTHALIC ACID ANHYDRIDE 4-Fluorophthalic anhydride 5-FLUORO-1,3-DIHYDRO-2-BENZOFURAN-1,3-DIONE 5-FLUORO-1,3-ISOBENZOFURANDIONE 5-FLUORO-2-BENZOFURAN-1,3-DIONE 5-FLUOROISOBENZOFURAN-1,3-DIONE AS02025 (C8H9FO3) contains 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).

CATO supplies 319-03-9 4-FLUOROBENZENE-1,2-DICARBOXYLIC ANHYDRIDE 4-FLUOROPHTHALIC ACID ANHYDRIDE 4-Fluorophthalic anhydride 5-FLUORO-1,3-DIHYDRO-2-BENZOFURAN-1,3-DIONE 5-FLUORO-1,3-ISOBENZOFURANDIONE 5-FLUORO-2-BENZOFURAN-1,3-DIONE 5-FLUOROISOBENZOFURAN-1,3-DIONE AS02025 (CAS 319-03-9), a certified reference material (molecular formula C8H9FO3, MW 172.15 g/mol) for analytical method development and quality control.

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), 319-03-9 4-FLUOROBENZENE-1,2-DICARBOXYLIC ANHYDRIDE 4-FLUOROPHTHALIC ACID ANHYDRIDE 4-Fluorophthalic anhydride 5-FLUORO-1,3-DIHYDRO-2-BENZOFURAN-1,3-DIONE 5-FLUORO-1,3-ISOBENZOFURANDIONE 5-FLUORO-2-BENZOFURAN-1,3-DIONE 5-FLUOROISOBENZOFURAN-1,3-DIONE AS02025 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 FormulaC8H9FO3
Molecular Weight172.15 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentF-containing

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