In the compound tocainide I need to identify the two groups of atoms/groups that are linked with its binding to receptor cells in the human body by hydrogen bonding. I have understood the two groups to be alcohol and acid but am stuck on the next part.
Hmmm. What alcohol. I don't see any -OH in the molecule, however that NH2 hanging off the end would be an excellent site for an H to be moved to a receptor. Another suspect site if the NH coming off the ring, that H is very loosely bound to that N.