Nicotine yog ib qho kev sib tw hluavtaws rau cov kws tshuaj. Txog thaum tsis ntev los no, qhov downside ntawm hluavtaws nicotine yog tus nqi, thiab txoj kev pheej yig tshaj plaws kom tau txais qhov xav tau enantiomer ntawm nicotine yog los ntawm kev sib cais ntawm racemic sib tov (RS-nicotine). Lwm cov kauj ruam, recrystallization, yuav tso cai rau kev xaiv ntawm qhov xav tau enantiomer (xws li S-) thiab tsim S-nicotine.
Qhov teeb meem tseem ceeb ntawm kev sib xyaw racemic yog tias muaj 50% ntawm cov tsis muaj kev puas siab puas ntsws R-nicotine thiab 50% ntawm kev puas siab puas ntsws S-nicotine cais cov peev txheej ntawm cov roj rau hauv ob feem piv rau cov khoom haus luam yeeb.
Txij li cov ntawv tsuas qhia cov ntsiab lus nicotine, ib qho kev sib xyaw ntawm cov nicotine hluavtaws nrog lub zog ntawm 10mg / ml yog qhov sib npaug rau 5mg / ml ntawm e-kua.
Tom qab ua kom huv si, cov kua hluavtaws tshiab tsis muaj xim, zoo li nicotine muab rho tawm los ntawm cov nplooj ntawv luam yeeb. Cov xim xim av ntawm cov kua nicotine yog cov txheej txheem ntuj tsim los ntawm kev raug lub teeb, cua sov thiab oxygen, thiab qee zaum nws kuj tshwm sim hauv qhov tsaus ntuj, txawm nyob hauv lub raj mis kaw. Nicotine coloration yog purely "cosmetic" thiab ib tug clearer kua tsis txhais hais tias nws yog purer los yog zoo dua.