Methyl 3-methoxythiophene-2-carboxylate CAS 62353-75-7

Purity 97%+In StockPharmaceutical Standards
CAS No.62353-75-7
Molecular FormulaC7H8O3S
Molecular Weight172.20 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 3-methoxythiophene-2-carboxylate CAS 62353-75-7 chemical structure

Description

Methyl 3-methoxythiophene-2-carboxylate (CAS 62353-75-7) is a high-purity analytical reference standard with the molecular formula C7H8O3S and a molecular weight of 172.20 g/mol.

Methyl 3-methoxythiophene-2-carboxylate (C7H8O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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.

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 FormulaC7H8O3S
Molecular Weight172.20 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1974
Sulfur Atoms1

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