sekio
Bluelight Crew
most of the common solvents are innocuous enough if you ingest less than a few mL. most of them evaporate and would be present only at trace levels in a "finished" product. water, isopropanol, ethanol, acetone, ether, thf, ester solvents, dmso are all safe in fairly large qtys. (not that I would drink any but water). even the "harsher" solvents like hexanes, dichloromethane, toluene, even methanol are safe if consumed in very limited quantities. they get metabolised and/or extcreted easily. the exceptions are a few things like carbon tet, dmf, chloroform, methanol, glymes, benzene, and usually they are avoided for this reason.
many simple synthons used in drugs are actually also flavour/fragrance components or found in nature at some level. for instance the immediate upstream precursor of mdma/mda (safrole) used to be present in root beer until the FDA decided it "causes cancer in rats" suspiciously close to the time MDMA was rising in popularity. another benefit is that in essentially all reaction workups, metal salts remain as polar water soluble compounds and the compound you want goes into an organic solvent, making "washing" quite easy (also most metals/salts are extraordinarily poorly soluble in organic solvents).
there is also a growing field of "green chemistry" focused on making molecules safely, quickly, and with the lowest impact to the environment (using low impact chemistry). for instance chromium can be relaced in many cases with a wide variety of other oxidation techniques, for instance one involving aqueous sodium hypochlorite or something (essentially household bleach, decomposes to salt and oxygen)
however - if you cannot conclusively prove your material is free of metals, or an outright toxin, then don't bioassay it. simple as that.
you can also devise a purification technique for your drug of choice if you do a little research. the US pharmacopiea has a big book of stuff like that. or, for most nitrogenous drugs, look up acid-base extraction.
many simple synthons used in drugs are actually also flavour/fragrance components or found in nature at some level. for instance the immediate upstream precursor of mdma/mda (safrole) used to be present in root beer until the FDA decided it "causes cancer in rats" suspiciously close to the time MDMA was rising in popularity. another benefit is that in essentially all reaction workups, metal salts remain as polar water soluble compounds and the compound you want goes into an organic solvent, making "washing" quite easy (also most metals/salts are extraordinarily poorly soluble in organic solvents).
there is also a growing field of "green chemistry" focused on making molecules safely, quickly, and with the lowest impact to the environment (using low impact chemistry). for instance chromium can be relaced in many cases with a wide variety of other oxidation techniques, for instance one involving aqueous sodium hypochlorite or something (essentially household bleach, decomposes to salt and oxygen)
however - if you cannot conclusively prove your material is free of metals, or an outright toxin, then don't bioassay it. simple as that.
you can also devise a purification technique for your drug of choice if you do a little research. the US pharmacopiea has a big book of stuff like that. or, for most nitrogenous drugs, look up acid-base extraction.
