Chimitant, that's not the molecule that xbnmx asked about. You've given PMA (2-Methylamino-1-(4-methoxyphenyl)propane). He wants the Ethylamine analogue of this, which would have an ethyl group (CH2CH3) on the nitrogen, rather than a methyl.
And the naming it as "2-ethylamino" is correct, although other ways of naming it are possible (for example, 1-(4-methoxyphenyl)-N-ethyl-isopropylamine, which would use the "amine" as you suggest). Also, PMA can, as I understand it, be some fun (in some people's opinions, anyway), but when its sold and taken as if it were MDMA it leads to serious problems.
Edit: I, too, hang my head in shame for missing out on an M... twice! Remind me to be awake when I post...