If they can't even be arsed to put the structure online (or even give it a name from which the structure can be inferred) I would stay the hell away from it. Chances are it is either shit (ex.: cathinones with alpha chains longer than butyl, or two alkyl groups on the nitrogen), or random floor sweepings of their other cathinone products that they can no longer sell because they've either been banned, or were so shit that no one would buy them.
Heck, there's a good chance it's not even a fucking cathinone.