3-Ethyl-2-oxo-2,3-dihydrobenzo[d]thiazole-6-sulfonic acid CAS 877463-43-9

Purity 97%+In StockPharmaceutical Standards
CAS No.877463-43-9
Molecular FormulaC9H9NO4S2
Molecular Weight259.30 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Ethyl-2-oxo-2,3-dihydrobenzo[d]thiazole-6-sulfonic acid CAS 877463-43-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 259.30 g/mol gives 3-Ethyl-2-oxo-2,3-dihydrobenzo[d]thiazole-6-sulfonic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-Ethyl-2-oxo-2,3-dihydrobenzo[d]thiazole-6-sulfonic acid (CAS 877463-43-9) is a high-purity analytical reference standard with the molecular formula C9H9NO4S2 and a molecular weight of 259.30 g/mol.

The molecular framework of 3-Ethyl-2-oxo-2,3-dihydrobenzo[d]thiazole-6-sulfonic acid (C9H9NO4S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

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 FormulaC9H9NO4S2
Molecular Weight259.30 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms1
Sulfur Atoms2

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