Dimethylsilyl cage polysilsesquioxane CAS 125756-69-6

Purity 97%+In StockPharmaceutical Standards
CAS No.125756-69-6
Molecular FormulaC16H56O20Si16
Molecular Weight1017.97 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Dimethylsilyl cage polysilsesquioxane CAS 125756-69-6 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 1017.97 g/mol gives Dimethylsilyl cage polysilsesquioxane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Dimethylsilyl cage polysilsesquioxane (CAS 125756-69-6) is a high-purity analytical reference standard with the molecular formula C16H56O20Si16 and a molecular weight of 1017.97 g/mol.

Structurally, Dimethylsilyl cage polysilsesquioxane (C16H56O20Si16) contains a carboxylic acid group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of -11.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 1017.97 g/mol, it falls into the high-molecular-weight range.

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.

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 FormulaC16H56O20Si16
Molecular Weight1017.97 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)-11.0
CAS Registry Year (est.)1992

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