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LSA extract, crystal yielding.

Migrated topic.
looks good pumpkin! ill have some updates soon. waiting on words on seeds.... this is one thing some of you might come across if you try this, large quantities of seeds are not cheap and often hard to come by less you GYO or find a plant and harvest them your self.
 
Is dextro- or levo- tartaric acid preferred in the crystallization?

Which one reacts with the LSA?

Please keep us posted! I am eagerly awaiting updates on this extraction procedure.
 
L-tartaric acid is preferred. maleic acid can be used also, if it can not be bought it can be made by partial decomopsition of fumaric acid. when fumaric acid is heated (preferably under nitrogen or CO2) to close to its decomp temp it sublimes into maleic anhydride. ill have to dig up my epimerization workup that lets you take the ISO-LSA (still in the non polar mother liquor) and convert (partially, 80%) into active LSA to increase yield.
 
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