Cyclooctasiloxane,hexadecamethyl

Name: Cyclooctasiloxane,hexadecamethyl
Brand: Vaqora Chemicals
SKU: VQ-039882

About Cyclooctasiloxane,hexadecamethyl

Cyclooctasiloxane,hexadecamethyl is an API impurity reference standard carrying the CAS registry number 556-68-3. Its molecular formula is C16H48O8Si8 and its molecular weight is 593.2 g/mol. Common synonyms include Hexadecamethylcyclooctasiloxane and Hexadecamethyl-cyclooctasioxane.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of the parent drug substance to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer Cyclooctasiloxane,hexadecamethyl in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Specifications & identifiers

Chemical identifiers
Product name	Cyclooctasiloxane,hexadecamethyl
Catalogue No.	VQ-039882
CAS Number	556-68-3
IUPAC name	2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane
Molecular formula	C₁₆H₄₈O₈Si₈
Molecular weight	593.2 g/mol
Exact mass	592.1503
Grade	Reference Standard
HSN code	38229090
InChIKey	XKJMJYZFAWYREL-UHFFFAOYSA-N
SMILES	C[Si]1(O[Si](O[Si](O[Si](O[Si](O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C)C
PubChem CID	11170

Physical properties
Physical form	Solid
H-bond donors / acceptors	0 / 8
TPSA	73.8 Å²

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Cyclooctasiloxane,hexadecamethyl?

The CAS Registry Number of Cyclooctasiloxane,hexadecamethyl is 556-68-3. It is also known as Hexadecamethylcyclooctasiloxane, Hexadecamethyl-cyclooctasioxane, hexadecamethyl-cyclooctasiloxane.

What is the molecular formula and molecular weight of Cyclooctasiloxane,hexadecamethyl?

Cyclooctasiloxane,hexadecamethyl has the molecular formula C16H48O8Si8 and a molecular weight of 593.2 g/mol. Its IUPAC name is 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane.

Which grade and pack sizes of Cyclooctasiloxane,hexadecamethyl can I order?

We supply Cyclooctasiloxane,hexadecamethyl in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Cyclooctasiloxane,hexadecamethyl?

Yes. Every lot of Cyclooctasiloxane,hexadecamethyl is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Cyclooctasiloxane,hexadecamethyl be shipped internationally?

Yes. We export Cyclooctasiloxane,hexadecamethyl worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.