3-Hexadecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane CAS 286938-67-8

Purity 97%+In StockPharmaceutical Standards
CAS No.286938-67-8
Molecular FormulaC23H54O2Si3
Molecular Weight446.93 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Hexadecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane CAS 286938-67-8 chemical structure

Description

The molecular framework of 3-Hexadecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane (C23H54O2Si3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

3-Hexadecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane (CAS 286938-67-8) is a high-purity analytical reference standard with the molecular formula C23H54O2Si3 and a molecular weight of 446.93 g/mol.

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 FormulaC23H54O2Si3
Molecular Weight446.93 g/mol
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)-3.0
CAS Registry Year (est.)2025

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