Which of the following does not belong to the halogen family ?
Morphine is a phenanthrene derivative . Many synthetic opiates are structural analogs of morphine. These include heroin, hydromorphone, hydrocodone and oxycodone Codeine, i.e., methylmorphine, although found in nature, is produced commercially by adding a methyl (CH3) group to morphine. Some analogs of morphine are opioid receptor antagonists . That is, they can block and reverse the effects of opiates. Naloxone is an example of an opioid antagonist that is synthesized by replacing the methyl group (CH3) on the nitrogen (N) found in the structure of morphine with an allyl group (CH2CH=CH2).