Polyphenylmethyldimethylsiloxane, average M.W. 2500 - 2700 CAS 9005-12-3

Purity 97%+In StockPharmaceutical Standards
CAS No.9005-12-3
Molecular FormulaC7H8OSi
Molecular Weight136.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Polyphenylmethyldimethylsiloxane, average M.W. 2500 - 2700 CAS 9005-12-3 chemical structure

Description

CATO supplies Polyphenylmethyldimethylsiloxane, average M.W. 2500 - 2700 (CAS 9005-12-3), a certified reference material (molecular formula C7H8OSi, MW 136.22 g/mol) for analytical method development and quality control.

The molecular framework of Polyphenylmethyldimethylsiloxane, average M.W. 2500 - 2700 (C7H8OSi) is characterized by a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), Polyphenylmethyldimethylsiloxane, average M.W. 2500 - 2700 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 FormulaC7H8OSi
Molecular Weight136.22 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1959

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