Zolpidem tartrate99294-93-6100 % similar Zolpidem82626-48-079 % similar Zolpidic acid189005-44-560 % similar 1-(4-Methylphenyl)-5-oxopyrrolidine-3-carboxylic acid133747-57-634 % similar (-)-Nicotine hydrogen (+)-tartrate2624-48-831 % similar (-)-Nicotine hydrogen (+)-tartrate65-31-631 % similar