3-Chlorothieno[2,3-b]pyridine-2-carboxylic acid CAS 937640-24-9

Purity 97%+In StockPharmaceutical Standards
CAS No.937640-24-9
Molecular FormulaC8H4ClNO2S
Molecular Weight213.64 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Chlorothieno[2,3-b]pyridine-2-carboxylic acid CAS 937640-24-9 chemical structure

Description

The occurrence of 3-Chlorothieno[2,3-b]pyridine-2-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3-Chlorothieno[2,3-b]pyridine-2-carboxylic acid (CAS 937640-24-9) is a high-purity analytical reference standard with the molecular formula C8H4ClNO2S and a molecular weight of 213.64 g/mol.

3-Chlorothieno[2,3-b]pyridine-2-carboxylic acid (C8H4ClNO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), 3-Chlorothieno[2,3-b]pyridine-2-carboxylic acid 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 FormulaC8H4ClNO2S
Molecular Weight213.64 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms1
Sulfur Atoms1

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