1-(3,3,5,5-Tetramethyl-1,2,3,5,6,7-hexahydro-s-indacen-1-yl)ethanone CAS 28805-35-8

Purity 97%+In StockPharmaceutical Standards
CAS No.28805-35-8
Molecular FormulaC18H24O
Molecular Weight256.38 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(3,3,5,5-Tetramethyl-1,2,3,5,6,7-hexahydro-s-indacen-1-yl)ethanone CAS 28805-35-8 chemical structure

Description

Structurally, 1-(3,3,5,5-Tetramethyl-1,2,3,5,6,7-hexahydro-s-indacen-1-yl)ethanone (C18H24O) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 256.38 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

1-(3,3,5,5-Tetramethyl-1,2,3,5,6,7-hexahydro-s-indacen-1-yl)ethanone (CAS 28805-35-8), molecular formula C18H24O and molecular weight 256.38 g/mol, is a CATO reference standard with documented purity and traceability.

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.

As a certified reference material (CRM), 1-(3,3,5,5-Tetramethyl-1,2,3,5,6,7-hexahydro-s-indacen-1-yl)ethanone meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC18H24O
Molecular Weight256.38 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965

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