Drugs in NAOH AND HCL

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FRPHARMS

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Can anyone explain to me how Paracetamol, ephedrine, benzocaine and phenacetin exist in acidic and alkaline solutions. I realise that 3 are esters and one is amine but I can't find any good diagrams for any one of the structures which exsist in acid or alkaline conditions. I also want to know more about the conjugation present within these molecules.
 

NormalSaline

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Can anyone explain to me how Paracetamol, ephedrine, benzocaine and phenacetin exist in acidic and alkaline solutions. I realise that 3 are esters and one is amine but I can't find any good diagrams for any one of the structures which exsist in acid or alkaline conditions. I also want to know more about the conjugation present within these molecules.


this reeks of homework.
 

mass

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would there not be protonation in hcl? anyone else agree but where would protonation happen.
 
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