3-Methyl-3,4-dihydroquinoxaline-2(1H)-thione CAS 149668-97-3

Purity 97%+In StockPharmaceutical Standards
CAS No.149668-97-3
Molecular FormulaC9H10N2S
Molecular Weight178.25 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-3,4-dihydroquinoxaline-2(1H)-thione CAS 149668-97-3 chemical structure

Description

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.

CATO supplies 3-Methyl-3,4-dihydroquinoxaline-2(1H)-thione (CAS 149668-97-3), a certified reference material (molecular formula C9H10N2S, MW 178.25 g/mol) for analytical method development and quality control.

Structurally, 3-Methyl-3,4-dihydroquinoxaline-2(1H)-thione (C9H10N2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 178.25 g/mol, it falls into the medium-molecular-weight range. 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).

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

Physical & Chemical Properties

Molecular FormulaC9H10N2S
Molecular Weight178.25 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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1999
Nitrogen Atoms2
Sulfur Atoms1

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