N-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carboxamide 2,2-dioxide CAS 320423-87-8

Purity 97%+In StockPharmaceutical Standards
CAS No.320423-87-8
Molecular FormulaC16H12Cl2N2O4S
Molecular Weight399.25 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

N-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carboxamide 2,2-dioxide CAS 320423-87-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 399.25 g/mol gives N-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carboxamide 2,2-dioxide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

N-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carboxamide 2,2-dioxide (CAS 320423-87-8) is a high-purity analytical reference standard with the molecular formula C16H12Cl2N2O4S and a molecular weight of 399.25 g/mol.

Based on its molecular formula C16H12Cl2N2O4S, N-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carboxamide 2,2-dioxide contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 399.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

As a certified reference material (CRM), N-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carboxamide 2,2-dioxide 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 FormulaC16H12Cl2N2O4S
Molecular Weight399.25 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms2
Sulfur Atoms1

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