Question:

What is a noticeable similarity in the structures of one of the drugs from the list to Psuedoephedrine, or perhaps on functional

What is a noticeable similarity in the
structures of one of the drugs from the list
to Psuedoephedrine, or perhaps on
functional groups that seem to be
common throughout these compounds.
Naproxen
Morphine
Codeine
Hydrocodone
Hydromorphone
Tramadol
Carfentanil
Oxycodone
Oxycontin
Fentanyl
Heroin
Methamphetamine
Psuedoephedrine
Ibuprofen

What is a noticeable similarity in the structures of one of the drugs from the list to Psuedoephedrine, or perhaps on functional groups that seem to be common throughout these compounds. Naproxen Morphine Codeine Hydrocodone Hydromorphone Tramadol Carfentanil Oxycodone Oxycontin Fentanyl Heroin Methamphetamine Psuedoephedrine Ibuprofen