5-Chloro-3-fluoropyridine-2-sulfonyl Chloride CAS 1261737-23-8

Purity 97%+In StockPharmaceutical Standards
CAS No.1261737-23-8
Molecular FormulaC5H2Cl2FNO2S
Molecular Weight230.04 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-3-fluoropyridine-2-sulfonyl Chloride CAS 1261737-23-8 chemical structure

Description

The occurrence of 5-Chloro-3-fluoropyridine-2-sulfonyl Chloride is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5-Chloro-3-fluoropyridine-2-sulfonyl Chloride (CAS 1261737-23-8) is a high-purity analytical reference standard with the molecular formula C5H2Cl2FNO2S and a molecular weight of 230.04 g/mol.

5-Chloro-3-fluoropyridine-2-sulfonyl Chloride (C5H2Cl2FNO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC5H2Cl2FNO2S
Molecular Weight230.04 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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1990
Halogen ContentF/Cl-containing
Nitrogen Atoms1
Sulfur Atoms1

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