1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyldisiloxane CAS 129073-86-5

Purity 97%+In StockPharmaceutical Standards
CAS No.129073-86-5
Molecular FormulaC16H22O3Si2
Molecular Weight318.52 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyldisiloxane CAS 129073-86-5 chemical structure

Description

The occurrence of 1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyldisiloxane is closely related to 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 1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyldisiloxane (CAS 129073-86-5), a certified reference material (molecular formula C16H22O3Si2, MW 318.52 g/mol) for analytical method development and quality control.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyldisiloxane is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 318.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), 1,3-Dimethoxy-1,3-dimethyl-1,3-diphenyldisiloxane 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 FormulaC16H22O3Si2
Molecular Weight318.52 g/mol
AppearanceOff-white to pale yellow crystalline powder
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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993

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