Sandri, G. Cavicchi et al. published their research in Farmaco, Edizione Pratica in 1959 | CAS: 19311-91-2

N,N-Diethylsalicylamide (cas: 19311-91-2) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. As a result of interactions such as these, the water solubility of amides is greater than that of corresponding hydrocarbons. These hydrogen bonds are also have an important role in the secondary structure of proteins.Safety of N,N-Diethylsalicylamide

Microchemical differentiation of some diethylamides used in pharmacy was written by Sandri, G. Cavicchi. And the article was included in Farmaco, Edizione Pratica in 1959.Safety of N,N-Diethylsalicylamide This article mentions the following:

Microphotographs are given of the crystals formed by nicotine diethylamide, phthaloyl bis(diethylamide), and 3,5-dimethyl-4-isoxazolecarboxylic acid diethylamide with Ni(SCN)2, Mn(SCN)2, Co(SCN)2, Cd(SCN)2, HBiBr4, and Reinecke acid. In the experiment, the researchers used many compounds, for example, N,N-Diethylsalicylamide (cas: 19311-91-2Safety of N,N-Diethylsalicylamide).

N,N-Diethylsalicylamide (cas: 19311-91-2) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. As a result of interactions such as these, the water solubility of amides is greater than that of corresponding hydrocarbons. These hydrogen bonds are also have an important role in the secondary structure of proteins.Safety of N,N-Diethylsalicylamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics