2,3-dihydro-2-oxo-1H-pyrido[2,3-b][1,4]thiazine-7-carboxylic acid CAS 443955-72-4

Purity 97%+In StockPharmaceutical Standards
CAS No.443955-72-4
Molecular FormulaC8H6N2O3S
Molecular Weight210.21 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,3-dihydro-2-oxo-1H-pyrido[2,3-b][1,4]thiazine-7-carboxylic acid CAS 443955-72-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 210.21 g/mol gives 2,3-dihydro-2-oxo-1H-pyrido[2,3-b][1,4]thiazine-7-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2,3-dihydro-2-oxo-1H-pyrido[2,3-b][1,4]thiazine-7-carboxylic acid (CAS 443955-72-4), molecular formula C8H6N2O3S and molecular weight 210.21 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 2,3-dihydro-2-oxo-1H-pyrido[2,3-b][1,4]thiazine-7-carboxylic acid (C8H6N2O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 210.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

CATO manufactures 2,3-dihydro-2-oxo-1H-pyrido[2,3-b][1,4]thiazine-7-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC8H6N2O3S
Molecular Weight210.21 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms2
Sulfur Atoms1

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