Pentamethylcyclopentasiloxane CAS 6166-86-5

Purity >85%In StockPharmaceutical Standards
CAS No.6166-86-5
Molecular FormulaC5H15O5Si5
Molecular Weight295.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Pentamethylcyclopentasiloxane CAS 6166-86-5 chemical structure

Description

The occurrence of Pentamethylcyclopentasiloxane is closely related to a carbohydrate-derived structure in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Pentamethylcyclopentasiloxane (CAS 6166-86-5), a certified reference material (molecular formula C5H15O5Si5, MW 295.60 g/mol) for analytical method development and quality control.

Structurally, Pentamethylcyclopentasiloxane (C5H15O5Si5) contains a carbohydrate-derived structure. The molecule exhibits a degree of unsaturation (DBE) of -1.5, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 295.60 g/mol, it falls into the medium-molecular-weight range.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO manufactures Pentamethylcyclopentasiloxane under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC5H15O5Si5
Molecular Weight295.60 g/mol
Purity>85%
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)-1.5
CAS Registry Year (est.)1958

Recommended Standards

Why CATO?