(3a’S,4’R,5’R,6a’R)-5’-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]hexahydro-N-[(1R)-2-hydroxy-1-phenylethyl]-5,5-dimethyl-spiro[1,3-dioxane-2,2’(1’H)-pentalene]-4’-carboxamide CAS 116855-81-3

Purity 97%+In StockPharmaceutical Standards
CAS No.116855-81-3
Molecular FormulaC28H45NO5Si
Molecular Weight503.75 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3a’S,4’R,5’R,6a’R)-5’-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]hexahydro-N-[(1R)-2-hydroxy-1-phenylethyl]-5,5-dimethyl-spiro[1,3-dioxane-2,2’(1’H)-pentalene]-4’-carboxamide CAS 116855-81-3 chemical structure

Description

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.

(3a’S,4’R,5’R,6a’R)-5’-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]hexahydro-N-[(1R)-2-hydroxy-1-phenylethyl]-5,5-dimethyl-spiro[1,3-dioxane-2,2’(1’H)-pentalene]-4’-carboxamide (CAS 116855-81-3), molecular formula C28H45NO5Si and molecular weight 503.75 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of (3a’S,4’R,5’R,6a’R)-5’-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]hexahydro-N-[(1R)-2-hydroxy-1-phenylethyl]-5,5-dimethyl-spiro[1,3-dioxane-2,2’(1’H)-pentalene]-4’-carboxamide (C28H45NO5Si) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

CATO manufactures (3a’S,4’R,5’R,6a’R)-5’-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]hexahydro-N-[(1R)-2-hydroxy-1-phenylethyl]-5,5-dimethyl-spiro[1,3-dioxane-2,2’(1’H)-pentalene]-4’-carboxamide 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 FormulaC28H45NO5Si
Molecular Weight503.75 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms1

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