MDMA was legal too, once. Commercial activity brings government scrutiny and accelerates the scheduling process. There are compounds that would probably still be legally low-risk for the amateur chemist if RC vendors hadn't cashed in during the early 2000s. Even if you can get away with it for a few months or a few years I think it's a terrible idea to encourage commercial production of not-yet-outlawed psychoactive compounds as a business.

Commercialization of beta-keto-MDMA (methylone) in fact led rather quickly to its being banned in the Netherlands. It used to be available in smartshops, then some radio DJ went on the air while under its influence and it was outlawed almost immediately thereafter.

I also don't think it's very likely that one could make much money selling "legal MDMA alternatives"; the demand for the real McCoy is too high, and although one could lie to one's clientele, all it takes is one connoisseur who can tell the difference and there goes your reputation.

bk-MDMA is also covered under the US Analogue Act whether one is "passing it off" as MDMA or not; its chemical structure is similar enough to both MDMA and methcathinone that there's really no argument to be made.

Actually, as long as the chemical is not scheduled and it's not intended for human consumption (and clearly marked as such), it's legal to sell.

Right, the human consumption bit is the catch -- but good luck to anyone who tries to sell it as "legal MDMA" and then make the argument that it wasn't being sold for human consumption.

Selling a bag full of sugar as cocaine is the exact same thing as actually selling cocaine as far as the law goes. Which is why I specifically said as long as you don't pass it off as MDMA or even an MDMA alternative. It would be simply a "party pill" (the web is full of "party pills" being sold). And just so you know this is in the right forum and it is not illegal. You can buy kilograms of the stuff from a number of US sources and there has also not been one single person in the entire US charged for selling, possessing, attempting to sell, ect, ect, Methylone. The stuff is legal.... for now. And Erowid is full of user experiences listing Methylone as either exactly like MDMA and almost impossible to differentiate between the two or being pleasantly more mellow then MDMA. Either way it would be a better product then %80 of the stuff out there being sold for $20 a pop filled with just caffiene or BZP. If you buy 40kg from China it would come to about 33 cents per 200mg dose.

It would be simply a "party pill" (the web is full of "party pills" being sold).

Methylone sold as a party pill is illegal. If you intend the subject for human consumption, i.e., party pill, it's illegal. Whether they are going to book you for it is another story.