I ran a quick literature search for "mephtetramine" and another search for "(2-((methylamino)methyl)-3,4-dihydronaphthalen-1(2H)-one)". I ran individual searches because GentlemanTom initially pointed outthat 'mephtetramine' may be a vendor-adjusted name for a target market.
The results were rather dry; only two published articles were found.
The first is written using a chemistry framework, however, i could not read the entire article, only the abstract.
The second article has a sociological and political framework which outlines and disscusses the issues surrounding RC's and names a few.
My reading of them was limited to their abstracts, just thought id summarise them above for ease. (Not even my uni's has a subscription to the article, despite being subscribed to the 90% of Wiley library content!).
I have referenced them below (in APA 6th edition style);
Kavanagh, P.V., & Power, J.D. (2014). New psychoactive
legislation in Ireland–Perspectives from academia. Drug Testing
Power, J.D., Scott, K.R., Gardener, E.A., Curran McAteer, B.M., O'Brien,
J.E., Brehon, M., Talbot, B., Kavanagh, P.V. (2014). The
syntheses, characterization and in vitro metabolism of nitracaine,
methoxypiperamide and mephtetramine. Drug Testing and
. doi: 10.1002/dta.1616