I recently completed an A. catechu extraction (50g trunk bark dried).
A/B using vinegar and lye, Ronsonol brand lighter fluid for the naphtha pulls (2x acid cooks).
Nothing in either a freeze precipitation or evaporation. Trace elements of potential plant fats, a few sparse crystals, no tryptamine smell. Although this is subjective, it had a familiar smell form other extractions, reminded me of of plant fats and phenethylamine smell (similar to A. Pravmissima).
Naphtha stayed clear even with hot pulls and the heat form the lye. Percentage pulled was very minuscule. Don't have the means to weigh it but estimate < .1%.