Ketamine was first developed in 1962. It is on the World Health Organization's List of Essential Medicines, the most important medication needed in a basic health system. It is legally sold under a very wide variety of brand names, including Ketalar.
If the crime you commit (generally just first degree murder) is in a state that does not have the death penalty then the only way you can be executed is if you are tried in a federal court as opposed to a state court.
But even if these were so, the death penalty is inherently immoral, not even because of its incapability but because of ours. For a successful system of capital punishment to work would require beings of semi-godlike abilities, as Jason Brennan puts it :ut even if these were so, the death penalty is inherently immoral, not even because of its incapability but because of ours. For a successful system of capital punishment to work would require beings of semi-godlike abilities, as Jason Brennan puts it :