Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-3-carboxylate) CAS 1343457-55-5

Purity 97%+In StockPharmaceutical Standards
CAS No.1343457-55-5
Molecular FormulaC20H16O4S4
Molecular Weight448.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-3-carboxylate) CAS 1343457-55-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 448.60 g/mol gives Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-3-carboxylate) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-3-carboxylate) (CAS 1343457-55-5), molecular formula C20H16O4S4 and molecular weight 448.60 g/mol, is a CATO reference standard with documented purity and traceability.

Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-3-carboxylate) (C20H16O4S4) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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

As a certified reference material (CRM), Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)bis(thiophene-3-carboxylate) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC20H16O4S4
Molecular Weight448.60 g/mol
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Sulfur Atoms4

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