Methyl 2-(3-methylbenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 328023-47-8

Purity 97%+In StockPharmaceutical Standards
CAS No.328023-47-8
Molecular FormulaC18H19NO3S
Molecular Weight329.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 2-(3-methylbenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 328023-47-8 chemical structure

Description

The occurrence of Methyl 2-(3-methylbenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Methyl 2-(3-methylbenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 328023-47-8) is a high-purity analytical reference standard with the molecular formula C18H19NO3S and a molecular weight of 329.41 g/mol.

Structurally, Methyl 2-(3-methylbenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (C18H19NO3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 329.41 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

As a certified reference material (CRM), Methyl 2-(3-methylbenzamido)-4,5,6,7-tetrahydrobenzo[b]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 FormulaC18H19NO3S
Molecular Weight329.41 g/mol
Purity97%+
StorageStore at 2-8°C, 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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms1
Sulfur Atoms1

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