3-ethoxyamphetamine is a little-known substance of the phenethylamine class. Very little is know of its toxicology.
A closely related substance, 3-ethoxymethamphetamine was determined to be a controlled substance in Canada, under the CDSA:
"The substance is an analogue of 4-methoxyamphetamine and is captured under item 1 of Schedule III to the CDSA."
The small amount of information relating to the close isomeric compound, 3-MMA  would indicate that 3-ethoxyamphetamine would be likely to display mild stimulating properties.