Which of the following drug binds only with the anionic site of cholinesterase ?
Physostigmine, neostigmine and pyridostigmine are carbamates by chemical nature, they bind to both esteritic as well as anionic site whereas edrophonium is an alcohol and binds to anionic site only.
Physostigmine
Neostigmine
Edrophonium
Pyridostigmine