(5Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one (Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one 156458-89-8 CAS 156458-89-8

Purity 97%+In StockPharmaceutical Standards
CAS No.156458-89-8
Molecular FormulaC18H16O2
Molecular Weight264.32 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(5Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one
(Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one
156458-89-8 CAS 156458-89-8 chemical structure

Description

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.

CATO supplies (5Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one (Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one 156458-89-8 (CAS 156458-89-8), a certified reference material (molecular formula C18H16O2, MW 264.32 g/mol) for analytical method development and quality control.

(5Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one (Z)-5,11-Dihydro-5-(3-hydroxypropylidene)-10H-dibenzo[a,d]cyclohepten-10-one 156458-89-8 (C18H16O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

Physical & Chemical Properties

Molecular FormulaC18H16O2
Molecular Weight264.32 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, 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)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2001

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