Be aware: In step 2 just one is earning an acetone extraction and at the same time changing the alkaloids their citrate salt. Following addition with the fumaric acid-saturated acetone in action 4, There exists an interconversion of alkaloid-citrate to alkaloid-fumarate salt, like: EDIT: I did the titration. I made https://deadheadchemistdmt96283.shotblogs.com/the-5-second-trick-for-buy-copyright-usa-50302791