1,1,1,3,3,5,5-Heptamethyltrisiloxane CAS 2895-07-0

Purity 97%+In StockPharmaceutical Standards
CAS No.2895-07-0
Molecular FormulaC7H21O2Si3
Molecular Weight221.50 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,1,1,3,3,5,5-Heptamethyltrisiloxane CAS 2895-07-0 chemical structure

Description

Structurally, 1,1,1,3,3,5,5-Heptamethyltrisiloxane (C7H21O2Si3) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of -2.5, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 221.50 g/mol, it falls into the medium-molecular-weight range.

CATO supplies 1,1,1,3,3,5,5-Heptamethyltrisiloxane (CAS 2895-07-0), a certified reference material (molecular formula C7H21O2Si3, MW 221.50 g/mol) for analytical method development and quality control.

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 1,1,1,3,3,5,5-Heptamethyltrisiloxane 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 FormulaC7H21O2Si3
Molecular Weight221.50 g/mol
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)-2.5
CAS Registry Year (est.)1957

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