procaine base

Hi, Trying to do Procaine washed from HCl to base or base to base. In HCl I know how to recieve from it base. I know in what solvent dissolve base. After this is a problem. Probably the formula is wrong and there's nothing more than add MEK/Acetone and dry it. Can somebody help to fix it?

Need the recipe of the procaine 59-46-1 snow flake crystal how to produce. Who can help me? Thanks.