2,5-Dimethylthiophene CAS 638-02-8

Purity >95%In StockPharmaceutical Standards
CAS No.638-02-8
Molecular FormulaC6H8S
Molecular Weight112.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,5-Dimethylthiophene CAS 638-02-8 chemical structure

Description

CATO supplies 2,5-Dimethylthiophene (CAS 638-02-8), a certified reference material (molecular formula C6H8S, MW 112.19 g/mol) for analytical method development and quality control.

Structurally, 2,5-Dimethylthiophene (C6H8S) contains sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 112.19 g/mol, it falls into the low-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).

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 FormulaC6H8S
Molecular Weight112.19 g/mol
Purity>95%
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Sulfur Atoms1

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