2,6-Dihydro-4H-thieno[3,4-c]pyrazole-3-carboxylic acid 5,5-dioxide CAS 949034-65-5

Purity 97%+In StockPharmaceutical Standards
CAS No.949034-65-5
Molecular FormulaC6H6N2O4S
Molecular Weight202.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,6-Dihydro-4H-thieno[3,4-c]pyrazole-3-carboxylic acid 5,5-dioxide CAS 949034-65-5 chemical structure

Description

The occurrence of 2,6-Dihydro-4H-thieno[3,4-c]pyrazole-3-carboxylic acid 5,5-dioxide is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 2,6-Dihydro-4H-thieno[3,4-c]pyrazole-3-carboxylic acid 5,5-dioxide (CAS 949034-65-5), a certified reference material (molecular formula C6H6N2O4S, MW 202.19 g/mol) for analytical method development and quality control.

Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2,6-Dihydro-4H-thieno[3,4-c]pyrazole-3-carboxylic acid 5,5-dioxide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 202.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

As a certified reference material (CRM), 2,6-Dihydro-4H-thieno[3,4-c]pyrazole-3-carboxylic acid 5,5-dioxide 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 FormulaC6H6N2O4S
Molecular Weight202.19 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms2
Sulfur Atoms1

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