Ethyl 2-oxo-2-(phenanthren-9-yl)acetate CAS 139746-29-5

Purity 97%+In StockPharmaceutical Standards
CAS No.139746-29-5
Molecular FormulaC18H14O3
Molecular Weight278.30 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 2-oxo-2-(phenanthren-9-yl)acetate CAS 139746-29-5 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.

Ethyl 2-oxo-2-(phenanthren-9-yl)acetate (CAS 139746-29-5), molecular formula C18H14O3 and molecular weight 278.30 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Ethyl 2-oxo-2-(phenanthren-9-yl)acetate (C18H14O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 278.30 g/mol, it falls into the medium-molecular-weight range. 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 FormulaC18H14O3
Molecular Weight278.30 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996

Recommended Standards

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