Mitragynine extraction is acid-base chemistry. The process is well-understood, reproducible, and the quality of the final product is entirely dependent on how rigorously each step is controlled.

Step One: Initial Extraction

Raw Mitragyna speciosa leaf material is extracted using a solvent — typically ethanol, methanol, or water-acidified solvent systems. The alkaloids are water-soluble in acidic conditions, which is exploited to separate them from the fat-soluble plant matrix.

The resulting extract is a crude mixture containing mitragynine, other alkaloids, chlorophyll, tannins, and various plant compounds. This crude extract is the starting material for refinement.

Step Two: Alkaline Freebase Precipitation

The crude extract is basified — pH raised using sodium hydroxide or ammonium hydroxide — causing the alkaloids to precipitate out of solution in their freebase form. The freebase is then collected, washed, and dried.

At this stage, what you have is a crude freebase mixture. Purity depends on how clean the initial extraction was and how carefully the precipitation was controlled.

Step Three: Salt Formation (Optional)

To produce a salt, the freebase is reacted with a dilute acid — lactic acid for lactate salt, hydrochloric acid for HCl salt. The reaction is straightforward: the base accepts a proton from the acid, forming an ionic compound. This salt form is then filtered, washed, and dried to produce the final crystalline powder.

Why This Matters for Purity

Every step in this process introduces opportunities for contamination or loss of precision. Residual solvents, incomplete washing, imprecise pH control — all of these show up in a COA as impurities or off-target peaks. A 93% purity figure means the process was controlled tightly enough to eliminate 93% of unwanted material. The remaining 7% is where quality separates suppliers.