2-Ethylnaphthalene CAS 939-27-5

Description

Compared with other compounds in its class, the molecular weight of 156.22 g/mol gives 2-Ethylnaphthalene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-Ethylnaphthalene (CAS 939-27-5), molecular formula C12H12 and molecular weight 156.22 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 2-Ethylnaphthalene (C12H12) is characterized by an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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

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