3-Ethyl-3-methyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one CAS 918645-78-0

Purity 97%+In StockPharmaceutical Standards
CAS No.918645-78-0
Molecular FormulaC21H20N2O
Molecular Weight316.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Ethyl-3-methyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one CAS 918645-78-0 chemical structure

Description

3-Ethyl-3-methyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (CAS 918645-78-0) is a high-purity analytical reference standard with the molecular formula C21H20N2O and a molecular weight of 316.40 g/mol.

Structurally, 3-Ethyl-3-methyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (C21H20N2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 316.40 g/mol, it falls into the moderately-high-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.

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.

Physical & Chemical Properties

Molecular FormulaC21H20N2O
Molecular Weight316.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms2

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