Barbiturates truth serum

After the September 11, 2001, terrorist attacks in the United States, federal investigators discussed the use of truth serum to obtain information from jailed terrorism suspects. The serum is the barbiturate thiopental, which is also known as pentothal sodium. The use of this drug to make a reluctant person talk has been portrayed in movies, books, and on television. 

In large doses, injected intravenously, it would bum and hurt horribly, because it s a salt and because it instantly throws off the chemical balance of the blood with which it comes into contact. It makes all muscles lock up in extreme contraction that would hurt unbearably. It wouldn t get to all muscles when a prisoner is being killed with it, however. Since the heart is a muscle and it pumps the blood -- the minute that massive dose of potassium salt hits the heart, one would be history and that would be as far as it would travel. "In lethal injection, three chemicals are used to kill. First, sodium pentothal (its trade name) or thiopental sodium (its chemical name). Then one minute later they inject pavulon. One minute later the potassium chloride. Pentothal is a short acting barbituric acid (barbiturate used in anaesthesia) and is commonly called "truth serum" as it s used in narcoanalysis. It knocks one out. It s a hypnotic. Pavulon is a curare derivative which locks up the lungs so one can t breathe. 

Not all barbiturates are used as tranquilizing agents alone. Sodium pentothal, popular once in dentistry, has also been used as a truth serum in specific amounts. 

Sodium Pentothal is a short-acting barbiturate derivative used as a general anesthetic and known in popular culture as a truth serum. It is synthesized like other barbiturates (see the A Deeper Look at the end of this chapter), using thiourea, (H2N)2C=S, in place of urea. How would you synthesize Sodium Pentothal ... 

---