Heptamethylcyclotetrasiloxan-2-ol CAS 5290-02-8

Purity >95%In StockPharmaceutical Standards
CAS No.5290-02-8
Molecular FormulaC7H22O5Si4
Molecular Weight298.59 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Heptamethylcyclotetrasiloxan-2-ol CAS 5290-02-8 chemical structure

Description

Heptamethylcyclotetrasiloxan-2-ol (CAS 5290-02-8) is a high-purity analytical reference standard with the molecular formula C7H22O5Si4 and a molecular weight of 298.59 g/mol.

Heptamethylcyclotetrasiloxan-2-ol (C7H22O5Si4) contains a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.

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.

CATO manufactures Heptamethylcyclotetrasiloxan-2-ol 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 FormulaC7H22O5Si4
Molecular Weight298.59 g/mol
Purity>95%
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)-3.0
CAS Registry Year (est.)1958

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