S,S'-(Thiobis(4,1-phenylene)) bis(2-methylprop-2-enethioate) CAS 129283-82-5

Purity 97%+In StockPharmaceutical Standards
CAS No.129283-82-5
Molecular FormulaC20H18O2S3
Molecular Weight386.55 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

S,S'-(Thiobis(4,1-phenylene)) bis(2-methylprop-2-enethioate) CAS 129283-82-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 386.55 g/mol gives S,S'-(Thiobis(4,1-phenylene)) bis(2-methylprop-2-enethioate) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies S,S'-(Thiobis(4,1-phenylene)) bis(2-methylprop-2-enethioate) (CAS 129283-82-5), a certified reference material (molecular formula C20H18O2S3, MW 386.55 g/mol) for analytical method development and quality control.

S,S'-(Thiobis(4,1-phenylene)) bis(2-methylprop-2-enethioate) (C20H18O2S3) contains a steroid 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.

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 FormulaC20H18O2S3
Molecular Weight386.55 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993
Sulfur Atoms3

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