1,3-Dihydrothieno[3,4-b]quinoxaline CAS 3138-80-5

Purity 97%+In StockPharmaceutical Standards
CAS No.3138-80-5
Molecular FormulaC10H8N2S
Molecular Weight188.25 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,3-Dihydrothieno[3,4-b]quinoxaline CAS 3138-80-5 chemical structure

Description

1,3-Dihydrothieno[3,4-b]quinoxaline (CAS 3138-80-5) is a high-purity analytical reference standard with the molecular formula C10H8N2S and a molecular weight of 188.25 g/mol.

1,3-Dihydrothieno[3,4-b]quinoxaline (C10H8N2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. Its high carbon-to-hydrogen ratio confers good lipid solubility; 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).

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 1,3-Dihydrothieno[3,4-b]quinoxaline 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 FormulaC10H8N2S
Molecular Weight188.25 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms2
Sulfur Atoms1

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