Yeah man don't get down on yourself, I'm not chemist, and in all honesty, I know little about that sort of process. And I wont add any further on that topic because Ive spent all my chem knowledge.
As far as impurities go, you're actually a step ahead with that! If there is an already-known synthesis for this drug published, we can take a look at A) what they used, as well as what they were left over with *or try to figure it out*. B) if someone was smart enough they could use a similar reaction but different chems, and speculate from there.
Impurities could also be because of a lazy wash of the product, it could also depend on "where" in the synthesis process they screwed up, if they did.
3F-P was not bad, I wouldn't buy it again but I had a good time.
I worry that the 3FP you got was not what your vendor claimed it to be, which could happen for the first X months with this Phenetrazine. Things are getting out of hand, but they have been for some time now eh
If anyone here remembers 5Methyl-MDA-Gate, there's 10x more opportunities for that now I feel.