3-Hydroxy-2,2-dimethylpropyl 4-methylbenzenesulfonate CAS 21651-04-7

Purity 97%+In StockPharmaceutical Standards
CAS No.21651-04-7
Molecular FormulaC12H18O4S
Molecular Weight258.33 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Hydroxy-2,2-dimethylpropyl 4-methylbenzenesulfonate CAS 21651-04-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 258.33 g/mol gives 3-Hydroxy-2,2-dimethylpropyl 4-methylbenzenesulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-Hydroxy-2,2-dimethylpropyl 4-methylbenzenesulfonate (CAS 21651-04-7) is a high-purity analytical reference standard with the molecular formula C12H18O4S and a molecular weight of 258.33 g/mol.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 3-Hydroxy-2,2-dimethylpropyl 4-methylbenzenesulfonate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 258.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), 3-Hydroxy-2,2-dimethylpropyl 4-methylbenzenesulfonate 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 FormulaC12H18O4S
Molecular Weight258.33 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963
Sulfur Atoms1

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