1,1’’-[(1,1-Dimethylethyl)[[(1R,2E,4E)-5-iodo-1-[3-(trimethylsilyl)-2-propyn-1-yl]-2,4-pentadien-1-yl]oxy]silylene]bis-benzene CAS 1220354-19-7

Purity 97%+In StockPharmaceutical Standards
CAS No.1220354-19-7
Molecular FormulaC27H35IOSi2
Molecular Weight558.64 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,1’’-[(1,1-Dimethylethyl)[[(1R,2E,4E)-5-iodo-1-[3-(trimethylsilyl)-2-propyn-1-yl]-2,4-pentadien-1-yl]oxy]silylene]bis-benzene CAS 1220354-19-7 chemical structure

Description

The occurrence of 1,1’’-[(1,1-Dimethylethyl)[[(1R,2E,4E)-5-iodo-1-[3-(trimethylsilyl)-2-propyn-1-yl]-2,4-pentadien-1-yl]oxy]silylene]bis-benzene is closely related to a steroid core, a hydroxyl group, an ether linkage, iodine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1,1’’-[(1,1-Dimethylethyl)[[(1R,2E,4E)-5-iodo-1-[3-(trimethylsilyl)-2-propyn-1-yl]-2,4-pentadien-1-yl]oxy]silylene]bis-benzene (CAS 1220354-19-7), molecular formula C27H35IOSi2 and molecular weight 558.64 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 1,1’’-[(1,1-Dimethylethyl)[[(1R,2E,4E)-5-iodo-1-[3-(trimethylsilyl)-2-propyn-1-yl]-2,4-pentadien-1-yl]oxy]silylene]bis-benzene (C27H35IOSi2) contains a steroid core, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 558.64 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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’’-[(1,1-Dimethylethyl)[[(1R,2E,4E)-5-iodo-1-[3-(trimethylsilyl)-2-propyn-1-yl]-2,4-pentadien-1-yl]oxy]silylene]bis-benzene 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 FormulaC27H35IOSi2
Molecular Weight558.64 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Halogen ContentI-containing

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