5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid CAS 40133-06-0

Purity 97%+In StockPharmaceutical Standards
CAS No.40133-06-0
Molecular FormulaC8H8O2S
Molecular Weight168.21 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid CAS 40133-06-0 chemical structure

Description

Structurally, 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid (C8H8O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 168.21 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).

CATO supplies 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid (CAS 40133-06-0), a certified reference material (molecular formula C8H8O2S, MW 168.21 g/mol) for analytical method development and quality control.

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 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid 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 FormulaC8H8O2S
Molecular Weight168.21 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1968
Sulfur Atoms1

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