I have used the Agent Lemon method a few times to extract Dextromethorphan from OTC syrups. I was wondering how it worked chemically. I know that the ammonia pulls the DXM from the syrup, and then the naptha pulls it from the ammonia. Then after that separates (due to naptha being petroleum based right?) Then the lemon juice takes it from the naptha. And that again separates. I know this whole process has to do with polar and non-polar solutions but not exactly sure. I've taken highschool chemistry but that is the extent of my knowledge.