5-Methoxy-3-methylbenzo[d]isothiazole CAS 73437-09-9

Purity 97%+In StockPharmaceutical Standards
CAS No.73437-09-9
Molecular FormulaC9H9NOS
Molecular Weight179.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methoxy-3-methylbenzo[d]isothiazole CAS 73437-09-9 chemical structure

Description

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

CATO supplies 5-Methoxy-3-methylbenzo[d]isothiazole (CAS 73437-09-9), a certified reference material (molecular formula C9H9NOS, MW 179.24 g/mol) for analytical method development and quality control.

5-Methoxy-3-methylbenzo[d]isothiazole (C9H9NOS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; 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).

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 FormulaC9H9NOS
Molecular Weight179.24 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1977
Nitrogen Atoms1
Sulfur Atoms1

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