[The radioprotective efficacy and pharmacological properties of S,beta-amidinoethylthiophosphate]

S,beta-Amidinoethyl thiophosphate, a radioprotective agent that was synthesized and studied, was shown to have certain advantages over cystamine: it was effective when used in a lesser amount; it was less toxic, had higher therapeutic effect, and, in contrast to castamine, it did not inhibit physical efficiency of animals. S,beta-Amidinoethyl thiophosphate and gammaphos were very similar in properties.