These are not "fake"... The body activates most things when consumed.

ALA has both isomers too... and only one is active.
Cyanocobalamin is inactive and activated in the body
folic acid is inactive and activated in the body

Vitamin C: Linus Pauling Institute
http://lpi.oregonstate.edu/infocente.../vitCform.html
and:
http://en.wikipedia.org/wiki/Vitamin_C
Thiamine is inactive during transport and activated in the body.
http://en.wikipedia.org/wiki/Thiamine

These properties are not "secret" or fake... they are common
knowledge.

There are studies quoted in the Linus Pauling article demonstrating Vit C synthetic works.

People on TPN... total parenteral nutrition...do not develop scurvy from the Vit C included in their IVs, which is synthetic.

It is best to keep away from these fringey internet sites.
Linus Pauling Institute is one of the best sources of information
for supplements. It gives the bibliography of the studies done
on each one you search there. Opinion sites or sites that heavily rewrite or use other sources, tend to get off the factual tract.