Kakimoto, Shichiro et al. published their research in Journal of Medicinal Chemistry in 1965 | CAS: 4714-63-0

4-(Ethylamino)benzonitrile (cas: 4714-63-0) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.Safety of 4-(Ethylamino)benzonitrile

Antituberculous compounds. XXII. Monoalkylaminobenzothioamides was written by Kakimoto, Shichiro;Tone, Ikuko. And the article was included in Journal of Medicinal Chemistry in 1965.Safety of 4-(Ethylamino)benzonitrile This article mentions the following:

Several monoalkyl, phenyl, and benzyl derivatives of 4-aminobenzothioamide, and their precursor nitriles were prepared to test the hypothesis that the extinction coefficient, Εmaximum of the C-N stretching vibration in the ir adsorption spectrum of the parent nitrile parallels the inhibitory action against Mycobacterium tuberculosis strain H37Rv in vitro. No conclusions were drawn. In the experiment, the researchers used many compounds, for example, 4-(Ethylamino)benzonitrile (cas: 4714-63-0Safety of 4-(Ethylamino)benzonitrile).

4-(Ethylamino)benzonitrile (cas: 4714-63-0) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.Safety of 4-(Ethylamino)benzonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts