349-89-3 Benzenesulfonyl fluoride, p-chloro- Benzenesulfonyl fluoride, 4-chloro- (9CI) 4-11-00-00114 (Beilstein Handbook Reference) BRN 2091507 p-Chlorobenzenesulfonyl fluoride 4-Chlorobenzenesulfonyl fluoride 4-Chlorophenylsulfonyl fluoride NSC 12521 CAS 349-89-3

Purity 97%+In StockPharmaceutical Standards
CAS No.349-89-3
Molecular FormulaC6H4ClFO2S
Molecular Weight194.61 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

349-89-3 Benzenesulfonyl fluoride, p-chloro- Benzenesulfonyl fluoride, 4-chloro- (9CI) 4-11-00-00114 (Beilstein Handbook Reference) BRN 2091507 p-Chlorobenzenesulfonyl fluoride 4-Chlorobenzenesulfonyl fluoride 4-Chlorophenylsulfonyl fluoride NSC 12521 CAS 349-89-3 chemical structure

Description

349-89-3 Benzenesulfonyl fluoride, p-chloro- Benzenesulfonyl fluoride, 4-chloro- (9CI) 4-11-00-00114 (Beilstein Handbook Reference) BRN 2091507 p-Chlorobenzenesulfonyl fluoride 4-Chlorobenzenesulfonyl fluoride 4-Chlorophenylsulfonyl fluoride NSC 12521 (C6H4ClFO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

349-89-3 Benzenesulfonyl fluoride, p-chloro- Benzenesulfonyl fluoride, 4-chloro- (9CI) 4-11-00-00114 (Beilstein Handbook Reference) BRN 2091507 p-Chlorobenzenesulfonyl fluoride 4-Chlorobenzenesulfonyl fluoride 4-Chlorophenylsulfonyl fluoride NSC 12521 (CAS 349-89-3) is a high-purity analytical reference standard with the molecular formula C6H4ClFO2S and a molecular weight of 194.61 g/mol.

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), 349-89-3 Benzenesulfonyl fluoride, p-chloro- Benzenesulfonyl fluoride, 4-chloro- (9CI) 4-11-00-00114 (Beilstein Handbook Reference) BRN 2091507 p-Chlorobenzenesulfonyl fluoride 4-Chlorobenzenesulfonyl fluoride 4-Chlorophenylsulfonyl fluoride NSC 12521 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 FormulaC6H4ClFO2S
Molecular Weight194.61 g/mol
Purity97%+
StorageStore at 2-8°C, 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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentF/Cl-containing
Sulfur Atoms1

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