5-Methylthiophene-3-thiol CAS 2634-17-5

Purity 97%+In StockPharmaceutical Standards
CAS No.2634-17-5
Molecular FormulaC5H6S2
Molecular Weight130.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methylthiophene-3-thiol CAS 2634-17-5 chemical structure

Description

5-Methylthiophene-3-thiol (CAS 2634-17-5) is a high-purity analytical reference standard with the molecular formula C5H6S2 and a molecular weight of 130.23 g/mol.

Structurally, 5-Methylthiophene-3-thiol (C5H6S2) 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 130.23 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 FormulaC5H6S2
Molecular Weight130.23 g/mol
Purity97%+
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 Atoms2

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