(R)-2-(3-Oxobenzo[d]isothiazol-2(3H)-yl)-2-phenylacetic acid CAS 1212375-07-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1212375-07-9
Molecular FormulaC15H11NO3S
Molecular Weight285.32 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(R)-2-(3-Oxobenzo[d]isothiazol-2(3H)-yl)-2-phenylacetic acid CAS 1212375-07-9 chemical structure

Description

The occurrence of (R)-2-(3-Oxobenzo[d]isothiazol-2(3H)-yl)-2-phenylacetic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

(R)-2-(3-Oxobenzo[d]isothiazol-2(3H)-yl)-2-phenylacetic acid (CAS 1212375-07-9), molecular formula C15H11NO3S and molecular weight 285.32 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C15H11NO3S, (R)-2-(3-Oxobenzo[d]isothiazol-2(3H)-yl)-2-phenylacetic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 285.32 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).

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.

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 FormulaC15H11NO3S
Molecular Weight285.32 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms1
Sulfur Atoms1

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