Pre ban was made by the chinese this new good stuff is all india synth stuff have a read of this
China banned production of the meph pre cursor
4-methylpropiophen one which contains up to
10% 3-methylpropiophen one (technical grade
reagent). Separation of 3-methylmethcathin one
from 4-methylmethcathin one is difficult. On large
scale, multiple recrystallizations are required
which I doubt most RC manufacturers would do
because of lost material and thus lost profit -
hence the impurity. Thats why chinese meph was
different as it contained 3-mmc as a by product
which happened to give you a better
buzz,although bad for your health.They were
losing too much product in washing it out.China
was main world producer of 4-methylpropiophen
one so when it dried up i presume thats when
india started producing meph but were unable to
get the banned pre cursors so used probably one
of these methods,both produce mephedrone but
none of them contain 3-mmc in the final
product.Cleaner yes but the buzz is not as intense
as the 3-mmc was helpin the chinese gears
potency.--------- India synth option It can also be
produced by oxidising the ephedrine analogue (4-
methylephedrine ) using potassium
permanganate dissolved in sulfuric acid. Because
4-methylephedrine can be obtained in a specific
enantiomeric form it is possible to produce
mephedrone consisting of only one enantiomer.
There is a danger associated with this method as
it may cause manganese poisoning if the product
is not correctly purified.[1]:17 ---------- india synth
option A stereospecific form of (S)-mephedrone
could be prepared via Friedel–Crafts acylation.
The first step in the synthesis would react toluene
and (S)-N-trifluoroace tylalanoyl chloride in the
presence of aluminium chloride, then deprotect
the intermediate with hydrochloric acid-propyl
alcohol . This would produce (S)-4-methylcathin
one, which could then be methylated to produce
mephedrone There are loads more synth recipies
about but none contain 3-mmc in the final
product unless 4-methylpropiophen one was used
as the pre cursor.
Only now has india sussed out a better pre cursor
and you can now find very good indian meph but
still not as evil as chinese but gettin close,lol.