nice,
my question arrises from the tendency for the fumarate spice, when pasted out with sodium carbonate and pulled with acetone, only a small portion will come over and evap out of the acetone. this is apparently because the spice in chacruna is mostly n-oxide, which is insoluble in acetone.
edit: checked wiki, and n-oxide is insoluble in naptha, so presumably insoluble in heptane as well.
better off sticking with limonene